diff --git a/examples/docker-compose.yml b/examples/docker-compose.yml
index 76ac1ba6..8c7f35b5 100644
--- a/examples/docker-compose.yml
+++ b/examples/docker-compose.yml
@@ -47,7 +47,7 @@ services:
 
   doc-runner-golang:
     container_name: doc-runner-golang
-    image: golang:1.22-alpine
+    image: golang:1.24-alpine
     command: >
       ash -c '
         apk update && apk add git make build-base;
diff --git a/examples/key/sign/sign.go b/examples/key/sign/sign.go
index bd9fa4c6..44db786f 100644
--- a/examples/key/sign/sign.go
+++ b/examples/key/sign/sign.go
@@ -47,7 +47,7 @@ func main() {
 	if err != nil {
 		log.Println(err)
 	}
-	fmt.Printf("Hash: %+v" + hash)
+	fmt.Printf("Hash: %+v", hash)
 
 	signatures, err := authenticityClient.GetSignatures(signedRecord)
 	if err != nil {