diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index 34959e3..3a55d56 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -9,7 +9,7 @@ on:
   schedule:
     - cron: '38 20 * * *'
   push:
-    branches: [ "main" ]
+    branches: [ "main", "v0.37.x", "v0.34.x" ]
     # Publish semver tags as releases.
     tags: [ 'v*.*.*' ]
   pull_request:
diff --git a/Dockerfile b/Dockerfile
index b6449bd..78ae1b4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.18-alpine
+FROM golang:1.20-alpine
 
 ENV PACKAGES curl make git libc-dev bash gcc linux-headers
 RUN apk add --no-cache $PACKAGES
@@ -15,4 +15,4 @@ RUN go mod download
 # Add CometMock and install it
 ADD . /CometMock
 WORKDIR /CometMock
-RUN go build -o /usr/local/bin/cometmock ./cometmock
\ No newline at end of file
+RUN go build -o /usr/local/bin/cometmock ./cometmock