diff --git a/hack/release.sh b/hack/release.sh
index 4c127199..c0ba5f51 100755
--- a/hack/release.sh
+++ b/hack/release.sh
@@ -118,6 +118,7 @@ build_and_push_all_envs() {
     build_and_push_env_image $version nodejs node-env
     build_and_push_env_image $version binary binary-env
     build_and_push_env_image $version dotnet dotnet-env
+    build_and_push_env_image $version dotnet20 dotnet20-env
     build_and_push_env_image $version go go-env
     build_and_push_env_image $version perl perl-env
     build_and_push_env_image $version php7 php-env