diff --git a/.github/workflows/generate.yml b/.github/workflows/generate.yml
index 7f80648..04ab2c9 100644
--- a/.github/workflows/generate.yml
+++ b/.github/workflows/generate.yml
@@ -61,7 +61,7 @@ jobs:
     - name: Setup Go
       uses: actions/setup-go@v5
       with:
-        go-version: 1.23.x
+        go-version: 1.26.x
 
     - name: Install the generator
       run: bash tools/setup-generator.sh
diff --git a/.github/workflows/test-generator.yml b/.github/workflows/test-generator.yml
index 70608b3..385e4ce 100644
--- a/.github/workflows/test-generator.yml
+++ b/.github/workflows/test-generator.yml
@@ -65,7 +65,7 @@ jobs:
     - name: Setup Go
       uses: actions/setup-go@v5
       with:
-        go-version: 1.23.x
+        go-version: 1.26.x
 
     - name: Install the generator
       run: bash tools/setup-generator.sh
diff --git a/generators/protoc-gen-go-googlecetypes/go.mod b/generators/protoc-gen-go-googlecetypes/go.mod
index 4fe81d6..131016a 100644
--- a/generators/protoc-gen-go-googlecetypes/go.mod
+++ b/generators/protoc-gen-go-googlecetypes/go.mod
@@ -2,6 +2,6 @@ module github.com/googleapis/google-cloudevents-go/generators/protoc-gen-go-goog
 
 go 1.22
 
-toolchain go1.23.8
+toolchain go1.26.3
 
 require google.golang.org/protobuf v1.36.6