diff --git a/Dockerfile b/Dockerfile
index 2672e64d..924884bc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@ FROM ubuntu:22.10 AS user
 # Create a nonroot user for final image
 RUN useradd -u 10001 nonroot
 
-FROM golang:1.26.2-alpine3.22 AS builder
+FROM golang:1.26.3-alpine3.22 AS builder
 
 WORKDIR /workspace
 
@@ -31,7 +31,7 @@ RUN CGO_ENABLED=0 GOOS=linux GOARCH=${TARGETARCH} \
     -X \"github.com/pluralsh/plural-cli/pkg/common.Date=${APP_DATE}\"" \
     -o plural ./cmd/plural
 
-FROM golang:1.26.2-alpine3.22 AS final
+FROM golang:1.26.3-alpine3.22 AS final
 
 WORKDIR /
 
diff --git a/go.mod b/go.mod
index 42515184..fdca168a 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/pluralsh/plural-cli
 
-go 1.26.2
+go 1.26.3
 
 require (
 	cloud.google.com/go/compute v1.54.0
diff --git a/hack/gen-client-mocks.sh b/hack/gen-client-mocks.sh
index a7830e92..56103562 100755
--- a/hack/gen-client-mocks.sh
+++ b/hack/gen-client-mocks.sh
@@ -6,7 +6,7 @@ cd $(dirname $0)/..
 
 source hack/lib.sh
 
-CONTAINERIZE_IMAGE=golang:1.25.1 containerize ./hack/gen-client-mocks.sh
+CONTAINERIZE_IMAGE=golang:1.26.3 containerize ./hack/gen-client-mocks.sh
 
 go run github.com/vektra/mockery/v2@latest  --dir=pkg/api/ --name=Client --output=pkg/test/mocks
 go run github.com/vektra/mockery/v2@latest  --dir=pkg/kubernetes --name=Kube --output=pkg/test/mocks
diff --git a/hack/lib.sh b/hack/lib.sh
index 9bc3e853..175fd544 100644
--- a/hack/lib.sh
+++ b/hack/lib.sh
@@ -7,7 +7,7 @@ echodate() {
 
 containerize() {
   local cmd="$1"
-  local image="${CONTAINERIZE_IMAGE:-golang:1.18.4}"
+  local image="${CONTAINERIZE_IMAGE:-golang:1.26.3}"
   local gocache="${CONTAINERIZE_GOCACHE:-/tmp/.gocache}"
   local gomodcache="${CONTAINERIZE_GOMODCACHE:-/tmp/.gomodcache}"
   local skip="${NO_CONTAINERIZE:-}"
diff --git a/test.Dockerfile b/test.Dockerfile
index 09b04840..723e0783 100644
--- a/test.Dockerfile
+++ b/test.Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.25.7-bookworm
+FROM golang:1.26.3-bookworm
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     ca-certificates \