diff --git a/Dockerfile b/Dockerfile
index 25fe196..e26643c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM purplekarrot/mingw-w64-x86-64:latest
 
-ENV GOLANG_VERSION=1.19.3
+ENV GOLANG_VERSION=1.21.5
 
 RUN apt-get update
 RUN apt-get install -y --no-install-recommends wget git