diff --git a/.github/workflows/actionlint.yml b/.github/workflows/actionlint.yml
index 00b997a..492f9b7 100644
--- a/.github/workflows/actionlint.yml
+++ b/.github/workflows/actionlint.yml
@@ -11,6 +11,16 @@ on:
     paths:
       - .github/workflows/**
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions: {}
+
+defaults:
+  run:
+    shell: bash
+
 jobs:
   actionlint:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/build-image.yml b/.github/workflows/build-image.yml
index a95903d..e37ac17 100644
--- a/.github/workflows/build-image.yml
+++ b/.github/workflows/build-image.yml
@@ -13,8 +13,11 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
-env:
-  DIFF_PDF_VERSION: 'v0.5.2'
+permissions: {}
+
+defaults:
+  run:
+    shell: bash
 
 jobs:
   build-and-push-docker-image:
@@ -24,6 +27,8 @@ jobs:
     permissions:
       contents: read
       packages: write
+    env:
+      DIFF_PDF_VERSION: 'v0.5.2'
 
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/hadolint.yml b/.github/workflows/hadolint.yml
index ba50b6a..8ddf107 100644
--- a/.github/workflows/hadolint.yml
+++ b/.github/workflows/hadolint.yml
@@ -13,6 +13,16 @@ on:
       - .github/workflows/hadolint.yml
       - Dockerfile
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions: {}
+
+defaults:
+  run:
+    shell: bash
+
 jobs:
   lint:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/pr-labeler.yml b/.github/workflows/pr-labeler.yml
index a9860e5..8b757b1 100644
--- a/.github/workflows/pr-labeler.yml
+++ b/.github/workflows/pr-labeler.yml
@@ -4,6 +4,16 @@ on:
   pull_request:
     types: [ opened ]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions: {}
+
+defaults:
+  run:
+    shell: bash
+
 jobs:
   pr-labeler:
     if: github.event.pull_request.head.repo.fork == false # Skip on public fork
diff --git a/.github/workflows/release-drafter.yml b/.github/workflows/release-drafter.yml
index 1b5e329..81df3e1 100644
--- a/.github/workflows/release-drafter.yml
+++ b/.github/workflows/release-drafter.yml
@@ -10,6 +10,12 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+permissions: {}
+
+defaults:
+  run:
+    shell: bash
+
 jobs:
   release-drafter:
     if: github.repository_owner == 'nowsprinting' # Skip on forked repo
diff --git a/.github/workflows/shellcheck.yml b/.github/workflows/shellcheck.yml
index dc657bc..4e3fa9f 100644
--- a/.github/workflows/shellcheck.yml
+++ b/.github/workflows/shellcheck.yml
@@ -13,6 +13,16 @@ on:
       - .github/workflows/shellcheck.yml
       - '**.sh'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions: {}
+
+defaults:
+  run:
+    shell: bash
+
 jobs:
   shellcheck:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e60968b..b94ad11 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,6 +20,12 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+permissions: {}
+
+defaults:
+  run:
+    shell: bash
+
 jobs:
   test:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/update-major.yml b/.github/workflows/update-major.yml
index ae4660d..d5588cb 100644
--- a/.github/workflows/update-major.yml
+++ b/.github/workflows/update-major.yml
@@ -5,6 +5,16 @@ on:
     tags:
       - 'v*'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions: {}
+
+defaults:
+  run:
+    shell: bash
+
 jobs:
   update-major:
     if: github.repository_owner == 'nowsprinting' # Skip on forked repo