diff --git a/docker/go-1.22.10/Dockerfile b/docker/go-1.22.10/Dockerfile
index 2825bb5..6247b5d 100644
--- a/docker/go-1.22.10/Dockerfile
+++ b/docker/go-1.22.10/Dockerfile
@@ -2,7 +2,7 @@
 FROM toolchain
 
 ARG TARGETPLATFORM
-ENV GO_VERSION 12210
+ENV GO_VERSION=12210
 
 RUN \
 if [ "$TARGETPLATFORM" = "linux/amd64" ]; then \
diff --git a/docker/go-1.23.4/Dockerfile b/docker/go-1.23.4/Dockerfile
index bdf7cf7..89f0f21 100644
--- a/docker/go-1.23.4/Dockerfile
+++ b/docker/go-1.23.4/Dockerfile
@@ -2,7 +2,7 @@
 FROM toolchain
 
 ARG TARGETPLATFORM
-ENV GO_VERSION 1234
+ENV GO_VERSION=1234
 
 RUN \
 if [ "$TARGETPLATFORM" = "linux/amd64" ]; then \