diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 62594a9..b0229a5 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -25,7 +25,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest, macos-latest, windows-latest ]
-        go-version: [ 1.20.x, 1.21.x ]
+        go-version: [ 1.21.x, 1.22.x, 1.23.x]
 
     steps:
       - name: Acquire sources
diff --git a/Dockerfile b/Dockerfile
index b5e9b3f..0dac584 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.20-bullseye as builder
+FROM golang:1.23-bullseye as builder
 WORKDIR /go/src/github.com/crate/cratedb-prometheus-adapter
 COPY . /go/src/github.com/crate/cratedb-prometheus-adapter/
 RUN CGO_ENABLED=0 GOOS=linux go build
diff --git a/devtools/release.Dockerfile b/devtools/release.Dockerfile
index e2c6190..85623bc 100644
--- a/devtools/release.Dockerfile
+++ b/devtools/release.Dockerfile
@@ -3,7 +3,7 @@
 # Run release archive builder within Docker container.
 #
 
-FROM golang:1.20-bullseye
+FROM golang:1.23-bullseye
 
 RUN apt-get update && apt-get --yes install zip