Release v1.39.0 (#7676)

## Overview

### Added

- Greatly reduce the cost of recording metrics in
`go.opentelemetry.io/otel/sdk/metric` using hashing for map keys.
(#7175)
- Add `WithInstrumentationAttributeSet` option to
`go.opentelemetry.io/otel/log`, `go.opentelemetry.io/otel/metric`, and
`go.opentelemetry.io/otel/trace` packages. This provides a
concurrent-safe and performant alternative to
`WithInstrumentationAttributes` by accepting a pre-constructed
`attribute.Set`. (#7287)
- Add experimental observability for the Prometheus exporter in
`go.opentelemetry.io/otel/exporters/prometheus`. Check the
`go.opentelemetry.io/otel/exporters/prometheus/internal/x` package
documentation for more information. (#7345)
- Add experimental observability metrics in
`go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc`. (#7353)
- Add temporality selector functions `DeltaTemporalitySelector`,
`CumulativeTemporalitySelector`, `LowMemoryTemporalitySelector` to
`go.opentelemetry.io/otel/sdk/metric`. (#7434)
- Add experimental observability metrics for simple log processor in
`go.opentelemetry.io/otel/sdk/log`. (#7548)
- Add experimental observability metrics in
`go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc`.
(#7459)
- Add experimental observability metrics in
`go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp`.
(#7486)
- Add experimental observability metrics for simple span processor in
`go.opentelemetry.io/otel/sdk/trace`. (#7374)
- Add experimental observability metrics in
`go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp`. (#7512)
- Add experimental observability metrics for manual reader in
`go.opentelemetry.io/otel/sdk/metric`. (#7524)
- Add experimental observability metrics for periodic reader in
`go.opentelemetry.io/otel/sdk/metric`. (#7571)
- Support `OTEL_EXPORTER_OTLP_LOGS_INSECURE` and
`OTEL_EXPORTER_OTLP_INSECURE` environmental variables in
`go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp`. (#7608)
- Add `Enabled` method to the `Processor` interface in
`go.opentelemetry.io/otel/sdk/log`. All `Processor` implementations now
include an `Enabled` method. (#7639)
- The `go.opentelemetry.io/otel/semconv/v1.38.0` package. The package
contains semantic conventions from the `v1.38.0` version of the
OpenTelemetry Semantic Conventions. See the [migration
documentation](./semconv/v1.38.0/MIGRATION.md) for information on how to
upgrade from `go.opentelemetry.io/otel/semconv/v1.37.0.`(#7648)

### Changed

- `Distinct` in `go.opentelemetry.io/otel/attribute` is no longer
guaranteed to uniquely identify an attribute set. Collisions between
`Distinct` values for different Sets are possible with extremely high
cardinality (billions of series per instrument), but are highly
unlikely. (#7175)
- `WithInstrumentationAttributes` in `go.opentelemetry.io/otel/trace`
synchronously de-duplicates the passed attributes instead of delegating
it to the returned `TracerOption`. (#7266)
- `WithInstrumentationAttributes` in `go.opentelemetry.io/otel/meter`
synchronously de-duplicates the passed attributes instead of delegating
it to the returned `MeterOption`. (#7266)
- `WithInstrumentationAttributes` in `go.opentelemetry.io/otel/log`
synchronously de-duplicates the passed attributes instead of delegating
it to the returned `LoggerOption`. (#7266)
- Rename the `OTEL_GO_X_SELF_OBSERVABILITY` environment variable to
`OTEL_GO_X_OBSERVABILITY` in `go.opentelemetry.io/otel/sdk/trace`,
`go.opentelemetry.io/otel/sdk/log`, and
`go.opentelemetry.io/otel/exporters/stdout/stdouttrace`. (#7302)
- Improve performance of histogram `Record` in
`go.opentelemetry.io/otel/sdk/metric` when min and max are disabled
using `NoMinMax`. (#7306)
- Improve error handling for dropped data during translation by using
`prometheus.NewInvalidMetric` in
`go.opentelemetry.io/otel/exporters/prometheus`. ⚠️ **Breaking Change:**
Previously, these cases were only logged and scrapes succeeded. Now,
when translation would drop data (e.g., invalid label/value), the
exporter emits a `NewInvalidMetric`, and Prometheus scrapes **fail with
HTTP 500** by default. To preserve the prior behavior (scrapes succeed
while errors are logged), configure your Prometheus HTTP handler with:
`promhttp.HandlerOpts{ ErrorHandling: promhttp.ContinueOnError }`.
(#7363)
- Replace fnv hash with xxhash in `go.opentelemetry.io/otel/attribute`
for better performance. (#7371)
- The default `TranslationStrategy` in
`go.opentelemetry.io/exporters/prometheus` is changed from
`otlptranslator.NoUTF8EscapingWithSuffixes` to
`otlptranslator.UnderscoreEscapingWithSuffixes`. (#7421)
- Improve performance of concurrent measurements in
`go.opentelemetry.io/otel/sdk/metric`. (#7427)
- Include W3C TraceFlags (bits 0–7) in the OTLP `Span.Flags` field in
`go.opentelemetry.io/exporters/otlp/otlptrace/otlptracehttp` and
`go.opentelemetry.io/exporters/otlp/otlptrace/otlptracegrpc`. (#7438)
- The `ErrorType` function in `go.opentelemetry.io/otel/semconv/v1.37.0`
now handles custom error types.
If an error implements an `ErrorType() string` method, the return value
of that method will be used as the error type. (#7442)

### Fixed

- Fix `WithInstrumentationAttributes` options in
`go.opentelemetry.io/otel/trace`, `go.opentelemetry.io/otel/metric`, and
`go.opentelemetry.io/otel/log` to properly merge attributes when passed
multiple times instead of replacing them. Attributes with duplicate keys
will use the last value passed. (#7300)
- The equality of `attribute.Set` when using the `Equal` method is not
affected by the user overriding the empty set pointed to by
`attribute.EmptySet` in `go.opentelemetry.io/otel/attribute`. (#7357)
- Return partial OTLP export errors to the caller in
`go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc`. (#7372)
- Return partial OTLP export errors to the caller in
`go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp`. (#7372)
- Return partial OTLP export errors to the caller in
`go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc`.
(#7372)
- Return partial OTLP export errors to the caller in
`go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp`.
(#7372)
- Return partial OTLP export errors to the caller in
`go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc`.
(#7372)
- Return partial OTLP export errors to the caller in
`go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp`.
(#7372)
- Fix `AddAttributes`, `SetAttributes`, `SetBody` on `Record` in
`go.opentelemetry.io/otel/sdk/log` to not mutate input. (#7403)
- Do not double record measurements of `RecordSet` methods in
`go.opentelemetry.io/otel/semconv/v1.37.0`. (#7655)
- Do not double record measurements of `RecordSet` methods in
`go.opentelemetry.io/otel/semconv/v1.36.0`. (#7656)

### Removed

- Drop support for [Go 1.23]. (#7274)
- Remove the `FilterProcessor` interface in
`go.opentelemetry.io/otel/sdk/log`. The `Enabled` method has been added
to the `Processor` interface instead. All `Processor` implementations
must now implement the `Enabled` method. Custom processors that do not
filter records can implement `Enabled` to return `true`. (#7639)

Author: MrAlias

CHANGELOG.md

@@ -8,15 +8,21 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ## [Unreleased]
 
+<!-- Released section -->
+<!-- Don't change this section unless doing release -->
+
+## [1.39.0/0.61.0/0.15.0/0.0.14] 2025-12-05
+
 ### Added
 
-- Add temporality selector functions `DeltaTemporalitySelector`, `CumulativeTemporalitySelector`, `LowMemoryTemporalitySelector` to `go.opentelemetry.io/otel/sdk/metric`. (#7434)
+- Greatly reduce the cost of recording metrics in `go.opentelemetry.io/otel/sdk/metric` using hashing for map keys. (#7175)
 - Add `WithInstrumentationAttributeSet` option to `go.opentelemetry.io/otel/log`, `go.opentelemetry.io/otel/metric`, and `go.opentelemetry.io/otel/trace` packages.
   This provides a concurrent-safe and performant alternative to `WithInstrumentationAttributes` by accepting a pre-constructed `attribute.Set`. (#7287)
-- Greatly reduce the cost of recording metrics in `go.opentelemetry.io/otel/sdk/metric` using hashing for map keys. (#7175)
-- Add experimental observability for the prometheus exporter in `go.opentelemetry.io/otel/exporters/prometheus`.
+- Add experimental observability for the Prometheus exporter in `go.opentelemetry.io/otel/exporters/prometheus`.
   Check the `go.opentelemetry.io/otel/exporters/prometheus/internal/x` package documentation for more information. (#7345)
 - Add experimental observability metrics in `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc`. (#7353)
+- Add temporality selector functions `DeltaTemporalitySelector`, `CumulativeTemporalitySelector`, `LowMemoryTemporalitySelector` to `go.opentelemetry.io/otel/sdk/metric`. (#7434)
+- Add experimental observability metrics for simple log processor in `go.opentelemetry.io/otel/sdk/log`. (#7548)
 - Add experimental observability metrics in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc`. (#7459)
 - Add experimental observability metrics in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp`. (#7486)
 - Add experimental observability metrics for simple span processor in `go.opentelemetry.io/otel/sdk/trace`. (#7374)
@@ -29,12 +35,31 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - The `go.opentelemetry.io/otel/semconv/v1.38.0` package.
   The package contains semantic conventions from the `v1.38.0` version of the OpenTelemetry Semantic Conventions.
   See the [migration documentation](./semconv/v1.38.0/MIGRATION.md) for information on how to upgrade from `go.opentelemetry.io/otel/semconv/v1.37.0.`(#7648)
-- Add experimental observability metrics for simple log processor in `go.opentelemetry.io/otel/sdk/log`. (#7548)
-- Do not double record measurements of `RecordSet` methods in `go.opentelemetry.io/otel/semconv/v1.36.0`. (#7656)
+
+### Changed
+
+- `Distinct` in `go.opentelemetry.io/otel/attribute` is no longer guaranteed to uniquely identify an attribute set.
+  Collisions between `Distinct` values for different Sets are possible with extremely high cardinality (billions of series per instrument), but are highly unlikely. (#7175)
+- `WithInstrumentationAttributes` in `go.opentelemetry.io/otel/trace` synchronously de-duplicates the passed attributes instead of delegating it to the returned `TracerOption`. (#7266)
+- `WithInstrumentationAttributes` in `go.opentelemetry.io/otel/meter` synchronously de-duplicates the passed attributes instead of delegating it to the returned `MeterOption`. (#7266)
+- `WithInstrumentationAttributes` in `go.opentelemetry.io/otel/log` synchronously de-duplicates the passed attributes instead of delegating it to the returned `LoggerOption`. (#7266)
+- Rename the `OTEL_GO_X_SELF_OBSERVABILITY` environment variable to `OTEL_GO_X_OBSERVABILITY` in `go.opentelemetry.io/otel/sdk/trace`, `go.opentelemetry.io/otel/sdk/log`, and `go.opentelemetry.io/otel/exporters/stdout/stdouttrace`. (#7302)
+- Improve performance of histogram `Record` in `go.opentelemetry.io/otel/sdk/metric` when min and max are disabled using `NoMinMax`. (#7306)
+- Improve error handling for dropped data during translation by using `prometheus.NewInvalidMetric` in `go.opentelemetry.io/otel/exporters/prometheus`.
+  ⚠️ **Breaking Change:** Previously, these cases were only logged and scrapes succeeded.
+  Now, when translation would drop data (e.g., invalid label/value), the exporter emits a `NewInvalidMetric`, and Prometheus scrapes **fail with HTTP 500** by default.
+  To preserve the prior behavior (scrapes succeed while errors are logged), configure your Prometheus HTTP handler with: `promhttp.HandlerOpts{ ErrorHandling: promhttp.ContinueOnError }`. (#7363)
+- Replace fnv hash with xxhash in `go.opentelemetry.io/otel/attribute` for better performance. (#7371)
+- The default `TranslationStrategy` in `go.opentelemetry.io/exporters/prometheus` is changed from `otlptranslator.NoUTF8EscapingWithSuffixes` to `otlptranslator.UnderscoreEscapingWithSuffixes`. (#7421)
+- Improve performance of concurrent measurements in `go.opentelemetry.io/otel/sdk/metric`. (#7427)
+- Include W3C TraceFlags (bits 0–7) in the OTLP `Span.Flags` field in `go.opentelemetry.io/exporters/otlp/otlptrace/otlptracehttp` and `go.opentelemetry.io/exporters/otlp/otlptrace/otlptracegrpc`. (#7438)
+- The `ErrorType` function in `go.opentelemetry.io/otel/semconv/v1.37.0` now handles custom error types.
+  If an error implements an `ErrorType() string` method, the return value of that method will be used as the error type. (#7442)
 
 ### Fixed
 
-- Fix `WithInstrumentationAttributes` options in `go.opentelemetry.io/otel/trace`, `go.opentelemetry.io/otel/metric`, and `go.opentelemetry.io/otel/log` to properly merge attributes when passed multiple times instead of replacing them. Attributes with duplicate keys will use the last value passed. (#7300)
+- Fix `WithInstrumentationAttributes` options in `go.opentelemetry.io/otel/trace`, `go.opentelemetry.io/otel/metric`, and `go.opentelemetry.io/otel/log` to properly merge attributes when passed multiple times instead of replacing them.
+  Attributes with duplicate keys will use the last value passed. (#7300)
 - The equality of `attribute.Set` when using the `Equal` method is not affected by the user overriding the empty set pointed to by `attribute.EmptySet` in `go.opentelemetry.io/otel/attribute`. (#7357)
 - Return partial OTLP export errors to the caller in `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc`. (#7372)
 - Return partial OTLP export errors to the caller in `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp`. (#7372)
@@ -44,6 +69,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - Return partial OTLP export errors to the caller in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp`. (#7372)
 - Fix `AddAttributes`, `SetAttributes`, `SetBody` on `Record` in `go.opentelemetry.io/otel/sdk/log` to not mutate input. (#7403)
 - Do not double record measurements of `RecordSet` methods in `go.opentelemetry.io/otel/semconv/v1.37.0`. (#7655)
+- Do not double record measurements of `RecordSet` methods in `go.opentelemetry.io/otel/semconv/v1.36.0`. (#7656)
 
 ### Removed
 
@@ -53,28 +79,6 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
   All `Processor` implementations must now implement the `Enabled` method.
   Custom processors that do not filter records can implement `Enabled` to return `true`. (#7639)
 
-### Changed
-
-- Rename the `OTEL_GO_X_SELF_OBSERVABILITY` environment variable to `OTEL_GO_X_OBSERVABILITY` in `go.opentelemetry.io/otel/sdk/trace`, `go.opentelemetry.io/otel/sdk/log`, and `go.opentelemetry.io/otel/exporters/stdout/stdouttrace`. (#7302)
-- Improve performance of histogram `Record` in `go.opentelemetry.io/otel/sdk/metric` when min and max are disabled using `NoMinMax`. (#7306)
-- `WithInstrumentationAttributes` in `go.opentelemetry.io/otel/trace` synchronously de-duplicates the passed attributes instead of delegating it to the returned `TracerOption`. (#7266)
-- `WithInstrumentationAttributes` in `go.opentelemetry.io/otel/meter` synchronously de-duplicates the passed attributes instead of delegating it to the returned `MeterOption`. (#7266)
-- `WithInstrumentationAttributes` in `go.opentelemetry.io/otel/log` synchronously de-duplicates the passed attributes instead of delegating it to the returned `LoggerOption`. (#7266)
-- `Distinct` in `go.opentelemetry.io/otel/attribute` is no longer guaranteed to uniquely identify an attribute set. Collisions between `Distinct` values for different Sets are possible with extremely high cardinality (billions of series per instrument), but are highly unlikely. (#7175)
-- Improve error handling for dropped data during translation by using `prometheus.NewInvalidMetric` in `go.opentelemetry.io/otel/exporters/prometheus`.
-  **Breaking Change:** Previously, these cases were only logged and scrapes succeeded.
-  Now, when translation would drop data (e.g., invalid label/value), the exporter emits a `NewInvalidMetric`, and Prometheus scrapes **fail with HTTP 500** by default.
-  To preserve the prior behavior (scrapes succeed while errors are logged), configure your Prometheus HTTP handler with: `promhttp.HandlerOpts{ ErrorHandling: promhttp.ContinueOnError }`. (#7363)
-- The default `TranslationStrategy` in `go.opentelemetry.io/exporters/prometheus` is changed from `otlptranslator.NoUTF8EscapingWithSuffixes` to `otlptranslator.UnderscoreEscapingWithSuffixes`. (#7421)
-- Include W3C TraceFlags (bits 0–7) in the OTLP `Span.Flags` field in `go.opentelemetry.io/exporters/otlp/otlptrace/otlptracehttp` and `go.opentelemetry.io/exporters/otlp/otlptrace/otlptracegrpc`. (#7438)
-- The `ErrorType` function in `go.opentelemetry.io/otel/semconv/v1.37.0` now handles custom error types.
-  If an error implements an `ErrorType() string` method, the return value of that method will be used as the error type. (#7442)
-- Improve performance of concurrent measurements in `go.opentelemetry.io/otel/sdk/metric`. (#7427)
-- Replace fnv hash with xxhash in `go.opentelemetry.io/otel/attribute` for better performance. (#7371)
-
-<!-- Released section -->
-<!-- Don't change this section unless doing release -->
-
 ## [1.38.0/0.60.0/0.14.0/0.0.13] 2025-08-29
 
 This release is the last to support [Go 1.23].
@@ -3494,7 +3498,8 @@ It contains api and sdk for trace and meter.
 - CircleCI build CI manifest files.
 - CODEOWNERS file to track owners of this project.
 
-[Unreleased]: https://github.com/open-telemetry/opentelemetry-go/compare/v1.38.0...HEAD
+[Unreleased]: https://github.com/open-telemetry/opentelemetry-go/compare/v1.39.0...HEAD
+[1.39.0/0.61.0/0.15.0/0.0.14]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.39.0
 [1.38.0/0.60.0/0.14.0/0.0.13]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.38.0
 [0.59.1]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/exporters/prometheus/v0.59.1
 [1.37.0/0.59.0/0.13.0]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.37.0

bridge/opencensus/go.mod

@@ -5,10 +5,10 @@ go 1.24.0
 require (
 	github.com/stretchr/testify v1.11.1
 	go.opencensus.io v0.24.0
-	go.opentelemetry.io/otel v1.38.0
-	go.opentelemetry.io/otel/sdk v1.38.0
-	go.opentelemetry.io/otel/sdk/metric v1.38.0
-	go.opentelemetry.io/otel/trace v1.38.0
+	go.opentelemetry.io/otel v1.39.0
+	go.opentelemetry.io/otel/sdk v1.39.0
+	go.opentelemetry.io/otel/sdk/metric v1.39.0
+	go.opentelemetry.io/otel/trace v1.39.0
 )
 
 require (
@@ -20,7 +20,7 @@ require (
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
-	go.opentelemetry.io/otel/metric v1.38.0 // indirect
+	go.opentelemetry.io/otel/metric v1.39.0 // indirect
 	golang.org/x/sys v0.39.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

bridge/opencensus/test/go.mod

@@ -4,10 +4,10 @@ go 1.24.0
 
 require (
 	go.opencensus.io v0.24.0
-	go.opentelemetry.io/otel v1.38.0
-	go.opentelemetry.io/otel/bridge/opencensus v1.38.0
-	go.opentelemetry.io/otel/sdk v1.38.0
-	go.opentelemetry.io/otel/trace v1.38.0
+	go.opentelemetry.io/otel v1.39.0
+	go.opentelemetry.io/otel/bridge/opencensus v1.39.0
+	go.opentelemetry.io/otel/sdk v1.39.0
+	go.opentelemetry.io/otel/trace v1.39.0
 )
 
 require (
@@ -17,8 +17,8 @@ require (
 	github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
-	go.opentelemetry.io/otel/metric v1.38.0 // indirect
-	go.opentelemetry.io/otel/sdk/metric v1.38.0 // indirect
+	go.opentelemetry.io/otel/metric v1.39.0 // indirect
+	go.opentelemetry.io/otel/sdk/metric v1.39.0 // indirect
 	golang.org/x/sys v0.39.0 // indirect
 )
 

bridge/opencensus/version.go

@@ -5,5 +5,5 @@ package opencensus // import "go.opentelemetry.io/otel/bridge/opencensus"
 
 // Version is the current release version of the opencensus bridge.
 func Version() string {
-	return "1.38.0"
+	return "1.39.0"
 }

bridge/opentracing/go.mod

@@ -11,8 +11,8 @@ require (
 	github.com/opentracing-contrib/go-grpc/test v0.0.0-20250917164221-a6e64aab787c
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/stretchr/testify v1.11.1
-	go.opentelemetry.io/otel v1.38.0
-	go.opentelemetry.io/otel/trace v1.38.0
+	go.opentelemetry.io/otel v1.39.0
+	go.opentelemetry.io/otel/trace v1.39.0
 	google.golang.org/grpc v1.77.0
 )
 
@@ -24,7 +24,7 @@ require (
 	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
-	go.opentelemetry.io/otel/metric v1.38.0 // indirect
+	go.opentelemetry.io/otel/metric v1.39.0 // indirect
 	golang.org/x/net v0.47.0 // indirect
 	golang.org/x/sys v0.39.0 // indirect
 	golang.org/x/text v0.31.0 // indirect

exporters/otlp/otlplog/otlploggrpc/go.mod

@@ -9,14 +9,14 @@ require (
 	github.com/cenkalti/backoff/v5 v5.0.3
 	github.com/google/go-cmp v0.7.0
 	github.com/stretchr/testify v1.11.1
-	go.opentelemetry.io/otel v1.38.0
+	go.opentelemetry.io/otel v1.39.0
 	go.opentelemetry.io/otel/log v0.14.0
-	go.opentelemetry.io/otel/metric v1.38.0
-	go.opentelemetry.io/otel/sdk v1.38.0
+	go.opentelemetry.io/otel/metric v1.39.0
+	go.opentelemetry.io/otel/sdk v1.39.0
 	go.opentelemetry.io/otel/sdk/log v0.14.0
 	go.opentelemetry.io/otel/sdk/log/logtest v0.14.0
-	go.opentelemetry.io/otel/sdk/metric v1.38.0
-	go.opentelemetry.io/otel/trace v1.38.0
+	go.opentelemetry.io/otel/sdk/metric v1.39.0
+	go.opentelemetry.io/otel/trace v1.39.0
 	go.opentelemetry.io/proto/otlp v1.9.0
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20251202230838-ff82c1b0f217
 	google.golang.org/grpc v1.77.0

exporters/otlp/otlplog/otlploghttp/go.mod

@@ -10,14 +10,14 @@ require (
 	github.com/go-logr/logr v1.4.3
 	github.com/google/go-cmp v0.7.0
 	github.com/stretchr/testify v1.11.1
-	go.opentelemetry.io/otel v1.38.0
+	go.opentelemetry.io/otel v1.39.0
 	go.opentelemetry.io/otel/log v0.14.0
-	go.opentelemetry.io/otel/metric v1.38.0
-	go.opentelemetry.io/otel/sdk v1.38.0
+	go.opentelemetry.io/otel/metric v1.39.0
+	go.opentelemetry.io/otel/sdk v1.39.0
 	go.opentelemetry.io/otel/sdk/log v0.14.0
 	go.opentelemetry.io/otel/sdk/log/logtest v0.14.0
-	go.opentelemetry.io/otel/sdk/metric v1.38.0
-	go.opentelemetry.io/otel/trace v1.38.0
+	go.opentelemetry.io/otel/sdk/metric v1.39.0
+	go.opentelemetry.io/otel/trace v1.39.0
 	go.opentelemetry.io/proto/otlp v1.9.0
 	google.golang.org/protobuf v1.36.10
 )

exporters/otlp/otlpmetric/otlpmetricgrpc/go.mod

@@ -8,9 +8,9 @@ require (
 	github.com/cenkalti/backoff/v5 v5.0.3
 	github.com/google/go-cmp v0.7.0
 	github.com/stretchr/testify v1.11.1
-	go.opentelemetry.io/otel v1.38.0
-	go.opentelemetry.io/otel/sdk v1.38.0
-	go.opentelemetry.io/otel/sdk/metric v1.38.0
+	go.opentelemetry.io/otel v1.39.0
+	go.opentelemetry.io/otel/sdk v1.39.0
+	go.opentelemetry.io/otel/sdk/metric v1.39.0
 	go.opentelemetry.io/proto/otlp v1.9.0
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20251202230838-ff82c1b0f217
 	google.golang.org/grpc v1.77.0
@@ -26,8 +26,8 @@ require (
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.3 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
-	go.opentelemetry.io/otel/metric v1.38.0 // indirect
-	go.opentelemetry.io/otel/trace v1.38.0 // indirect
+	go.opentelemetry.io/otel/metric v1.39.0 // indirect
+	go.opentelemetry.io/otel/trace v1.39.0 // indirect
 	golang.org/x/net v0.47.0 // indirect
 	golang.org/x/sys v0.39.0 // indirect
 	golang.org/x/text v0.31.0 // indirect

exporters/otlp/otlpmetric/otlpmetricgrpc/version.go

@@ -5,5 +5,5 @@ package otlpmetricgrpc // import "go.opentelemetry.io/otel/exporters/otlp/otlpme
 
 // Version is the current release version of the OpenTelemetry OTLP over gRPC metrics exporter in use.
 func Version() string {
-	return "1.38.0"
+	return "1.39.0"
 }

exporters/otlp/otlpmetric/otlpmetrichttp/go.mod

@@ -8,9 +8,9 @@ require (
 	github.com/cenkalti/backoff/v5 v5.0.3
 	github.com/google/go-cmp v0.7.0
 	github.com/stretchr/testify v1.11.1
-	go.opentelemetry.io/otel v1.38.0
-	go.opentelemetry.io/otel/sdk v1.38.0
-	go.opentelemetry.io/otel/sdk/metric v1.38.0
+	go.opentelemetry.io/otel v1.39.0
+	go.opentelemetry.io/otel/sdk v1.39.0
+	go.opentelemetry.io/otel/sdk/metric v1.39.0
 	go.opentelemetry.io/proto/otlp v1.9.0
 	google.golang.org/grpc v1.77.0
 	google.golang.org/protobuf v1.36.10
@@ -25,8 +25,8 @@ require (
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.3 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
-	go.opentelemetry.io/otel/metric v1.38.0 // indirect
-	go.opentelemetry.io/otel/trace v1.38.0 // indirect
+	go.opentelemetry.io/otel/metric v1.39.0 // indirect
+	go.opentelemetry.io/otel/trace v1.39.0 // indirect
 	golang.org/x/net v0.47.0 // indirect
 	golang.org/x/sys v0.39.0 // indirect
 	golang.org/x/text v0.31.0 // indirect