diff --git a/.github/workflows/govuln.yml b/.github/workflows/govuln.yml
index 6c89b7fc..a50bc626 100644
--- a/.github/workflows/govuln.yml
+++ b/.github/workflows/govuln.yml
@@ -24,7 +24,6 @@ jobs:
     strategy:
       matrix:
         go-version:
-          - "1.21"
           - "1.22"
           - "1.23"
     steps:
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 36b0dbc4..eb0a7183 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -28,7 +28,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.21"
+          go-version: "1.22"
 
       - name: lint
         uses: golangci/golangci-lint-action@v6.1.1
@@ -49,7 +49,7 @@ jobs:
 
       - name: Check minimum supported version of Go
         run: |
-          go mod tidy -go=1.21.0 -compat=1.21.0
+          go mod tidy -go=1.22.0 -compat=1.22.0
 
       - name: Check go.mod / go.sum
         run: |
diff --git a/.github/workflows/tarball.yml b/.github/workflows/tarball.yml
index 6d595292..747254a8 100644
--- a/.github/workflows/tarball.yml
+++ b/.github/workflows/tarball.yml
@@ -24,7 +24,6 @@ jobs:
     strategy:
       matrix:
         go-version:
-          - "1.21"
           - "1.22"
           - "1.23"
     runs-on: ubuntu-latest
@@ -49,7 +48,6 @@ jobs:
     strategy:
       matrix:
         go-version:
-          - "1.21"
           - "1.22"
           - "1.23"
     runs-on: ubuntu-latest
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7e98031f..9c746382 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -27,7 +27,6 @@ jobs:
     strategy:
       matrix:
         go-version:
-          - "1.21"
           - "1.22"
           - "1.23"
     runs-on: ubuntu-latest
diff --git a/README.md b/README.md
index 1e14aaae..270aedf3 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ information on the API of the signaling server.
 The following tools are required for building the signaling server.
 
 - git
-- go >= 1.21
+- go >= 1.22
 - make
 
 Usually the last two versions of Go are supported. This follows the release
diff --git a/go.mod b/go.mod
index 302829c3..fc3df8d4 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/strukturag/nextcloud-spreed-signaling
 
-go 1.21.0
+go 1.22.0
 
 require (
 	github.com/dlintw/goconf v0.0.0-20120228082610-dcc070983490