diff --git a/.github/workflows/api_diff_check.yml b/.github/workflows/api_diff_check.yml
index 4b797197..612223cc 100644
--- a/.github/workflows/api_diff_check.yml
+++ b/.github/workflows/api_diff_check.yml
@@ -16,7 +16,7 @@ jobs:
     - name: Set up Go 1.x
       uses: actions/setup-go@v2
       with:
-        go-version: "1.21"
+        go-version: "1.22"
       id: go
 
     - name: Check out code into the Go module directory
diff --git a/.github/workflows/codegen.yml b/.github/workflows/codegen.yml
index 3b0e5b5b..f2ddcb63 100644
--- a/.github/workflows/codegen.yml
+++ b/.github/workflows/codegen.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        go-version: ["1.21"]
+        go-version: ["1.22"]
     env:
       JAVA_TOOL_OPTIONS: "-Xmx2g"
     steps:
diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 529fb641..24881fbe 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        go-version: ["1.21", "1.22", "1.23"]
+        go-version: ["1.22", "1.23", "1.24"]
     steps:
     - uses: actions/checkout@v2
 
diff --git a/codegen/smithy-go-codegen-test/smithy-build.json b/codegen/smithy-go-codegen-test/smithy-build.json
index 98ca0963..0624a94a 100644
--- a/codegen/smithy-go-codegen-test/smithy-build.json
+++ b/codegen/smithy-go-codegen-test/smithy-build.json
@@ -6,14 +6,14 @@
             "module": "github.com/aws/smithy-go/internal/tests/service/weather",
             "moduleVersion": "0.0.1",
             "generateGoMod": true,
-            "goDirective": "1.18"
+            "goDirective": "1.22"
         },
         "go-server-codegen": {
             "service": "example.weather#Weather",
             "module": "github.com/aws/smithy-go/internal/tests/server/weather",
             "moduleVersion": "0.0.1",
             "generateGoMod": true,
-            "goDirective": "1.18"
+            "goDirective": "1.22"
         }
     }
 }
diff --git a/codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/GoModuleInfo.java b/codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/GoModuleInfo.java
index 881ccf7d..4315da61 100644
--- a/codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/GoModuleInfo.java
+++ b/codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/GoModuleInfo.java
@@ -27,7 +27,7 @@
 
 public final class GoModuleInfo {
 
-    public static final String DEFAULT_GO_DIRECTIVE = "1.15";
+    public static final String DEFAULT_GO_DIRECTIVE = "1.22";
 
     private List<SymbolDependency> dependencies;
 
diff --git a/go.mod b/go.mod
index f2ce1b08..c01f0e7e 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
 module github.com/aws/smithy-go
 
-go 1.21
+go 1.22