diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0a39158d..5222f12f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -16,7 +16,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v3
       with:
-        go-version: 1.20.2
+        go-version: 1.20.3
 
     - name: Install cover
       run: go install golang.org/x/tools/cmd/cover@latest
diff --git a/docker/ct-malformed/Dockerfile b/docker/ct-malformed/Dockerfile
index 99aba4c1..12cccbea 100644
--- a/docker/ct-malformed/Dockerfile
+++ b/docker/ct-malformed/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.20.2-alpine as builder
+FROM golang:1.20.3-alpine as builder
 
 RUN apk --update upgrade \
 && apk --no-cache --no-progress add git bash curl \
diff --git a/docker/ct-test-srv/Dockerfile b/docker/ct-test-srv/Dockerfile
index 6b4aea33..87905fcd 100644
--- a/docker/ct-test-srv/Dockerfile
+++ b/docker/ct-test-srv/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.20.2-alpine as builder
+FROM golang:1.20.3-alpine as builder
 
 RUN apk --update upgrade \
 && apk --no-cache --no-progress add git bash curl \
diff --git a/docker/ct-woodpecker/Dockerfile b/docker/ct-woodpecker/Dockerfile
index a7b7722e..44d76ed8 100644
--- a/docker/ct-woodpecker/Dockerfile
+++ b/docker/ct-woodpecker/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.20.2-alpine as builder
+FROM golang:1.20.3-alpine as builder
 
 RUN apk --update upgrade \
 && apk --no-cache --no-progress add git bash curl build-base \