diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 415ebf428..98282c9a5 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -267,7 +267,11 @@ jobs:
 
     - name: build test wrapper
       working-directory: ${{ github.workspace }}/src
-      run: go build -o ${{ github.workspace }}/testwrapper.exe ./cmd/testwrapper
+      run: ./tool/go build -o ${{ github.workspace }}/testwrapper.exe ./cmd/testwrapper
+
+    - name: Set PATH for ./tool/go
+      shell: bash
+      run: echo "${{ github.workspace }}/src/tool" >> $GITHUB_PATH
 
     - name: test
       if: matrix.key != 'win-bench' # skip on bench builder
diff --git a/cmd/testwrapper/testwrapper.go b/cmd/testwrapper/testwrapper.go
index df10a53bc..67146ef7a 100644
--- a/cmd/testwrapper/testwrapper.go
+++ b/cmd/testwrapper/testwrapper.go
@@ -203,6 +203,12 @@ func runTests(ctx context.Context, attempt int, pt *packageTests, goTestArgs, te
 }
 
 func main() {
+	versionOutput, err := exec.Command("go", "version").CombinedOutput()
+	if err != nil {
+		log.Fatalf("testwrapper: failed to get go version: %v", err)
+	}
+	fmt.Printf("testwrapper: using %s", versionOutput)
+
 	goTestArgs, packages, testArgs, err := splitArgs(os.Args[1:])
 	if err != nil {
 		log.Fatal(err)