diff --git a/.github/workflows/release-docker.yml b/.github/workflows/release-docker.yml
index 8c2e077..94f8f0d 100644
--- a/.github/workflows/release-docker.yml
+++ b/.github/workflows/release-docker.yml
@@ -15,10 +15,17 @@ on:
   push:
     tags:
       - '*.*.*'
-  workflow_dispatch:
   pull_request:
     branches: [ main ]
 
+  # Allow job to be triggered manually.
+  workflow_dispatch:
+
+# Cancel in-progress jobs when pushing to the same branch.
+concurrency:
+  cancel-in-progress: true
+  group: ${{ github.workflow }}-${{ github.ref }}
+
 env:
   GHCR_IMAGE_NAME: ghcr.io/panodata/grafana-wtf
 
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 328b413..87de7e7 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -10,6 +10,14 @@ on:
   schedule:
     - cron: '0 7 * * 1'
 
+  # Allow job to be triggered manually.
+  workflow_dispatch:
+
+# Cancel in-progress jobs when pushing to the same branch.
+concurrency:
+  cancel-in-progress: true
+  group: ${{ github.workflow }}-${{ github.ref }}
+
 jobs:
 
   tests: