diff --git a/.github/workflows/build-builder-image.yml b/.github/workflows/build-builder-image.yml
index 150bd3f..cc01fe4 100644
--- a/.github/workflows/build-builder-image.yml
+++ b/.github/workflows/build-builder-image.yml
@@ -7,7 +7,7 @@ on:
     - cron: '30 0 * * *'
 
 env:
-  GO_VERSION: 1.19.5
+  GO_VERSION: 1.20
 
 jobs:
 
diff --git a/action.yml b/action.yml
index 49019bf..3c57d80 100644
--- a/action.yml
+++ b/action.yml
@@ -1,4 +1,4 @@
 name: natpass build environment
 runs:
   using: docker
-  image: docker://lwch/natpass-builder:1.19.5
\ No newline at end of file
+  image: docker://lwch/natpass-builder:1.20
\ No newline at end of file