diff --git a/.github/workflows/fuzz-bash.yml b/.github/workflows/fuzz-bash.yml
index 6e8043504..e80f3ee65 100644
--- a/.github/workflows/fuzz-bash.yml
+++ b/.github/workflows/fuzz-bash.yml
@@ -20,6 +20,10 @@ on:
 
 permissions: read-all
 
+concurrency:
+  group: fuzz
+  cancel-in-progress: false
+
 jobs:
   fuzz:
     name: Fuzz
diff --git a/.github/workflows/fuzz-cmd.yml b/.github/workflows/fuzz-cmd.yml
index 86076f427..9ecac66bc 100644
--- a/.github/workflows/fuzz-cmd.yml
+++ b/.github/workflows/fuzz-cmd.yml
@@ -15,11 +15,15 @@ on:
     branches:
       - main
   schedule:
-    - cron: "5 2 * * *"
+    - cron: "0 2 * * *"
   workflow_dispatch: ~
 
 permissions: read-all
 
+concurrency:
+  group: fuzz
+  cancel-in-progress: false
+
 jobs:
   fuzz:
     name: Fuzz
diff --git a/.github/workflows/fuzz-csh.yml b/.github/workflows/fuzz-csh.yml
index f5ce9a4cf..05f5f49cd 100644
--- a/.github/workflows/fuzz-csh.yml
+++ b/.github/workflows/fuzz-csh.yml
@@ -15,11 +15,15 @@ on:
     branches:
       - main
   schedule:
-    - cron: "10 2 * * *"
+    - cron: "0 2 * * *"
   workflow_dispatch: ~
 
 permissions: read-all
 
+concurrency:
+  group: fuzz
+  cancel-in-progress: false
+
 jobs:
   fuzz:
     name: Fuzz
diff --git a/.github/workflows/fuzz-dash.yml b/.github/workflows/fuzz-dash.yml
index 03820155d..cfa7442f5 100644
--- a/.github/workflows/fuzz-dash.yml
+++ b/.github/workflows/fuzz-dash.yml
@@ -15,11 +15,15 @@ on:
     branches:
       - main
   schedule:
-    - cron: "15 2 * * *"
+    - cron: "0 2 * * *"
   workflow_dispatch: ~
 
 permissions: read-all
 
+concurrency:
+  group: fuzz
+  cancel-in-progress: false
+
 jobs:
   fuzz:
     name: Fuzz
diff --git a/.github/workflows/fuzz-no-shell.yml b/.github/workflows/fuzz-no-shell.yml
index 7c3676c03..4f37032a4 100644
--- a/.github/workflows/fuzz-no-shell.yml
+++ b/.github/workflows/fuzz-no-shell.yml
@@ -17,15 +17,22 @@ on:
     branches:
       - main
   schedule:
-    - cron: "25 2 * * *"
+    - cron: "0 2 * * *"
   workflow_dispatch: ~
 
 permissions: read-all
 
+concurrency:
+  group: fuzz
+  cancel-in-progress: false
+
 jobs:
   fuzz-unix:
     name: Fuzz Unix
     uses: ericcornelissen/shescape/.github/workflows/reusable-fuzz.yml@main
+    concurrency:
+      group: fuzz-no-shell
+      cancel-in-progress: false
     with:
       duration: 600 # seconds == 10 minutes
       os: ubuntu-22.04
@@ -34,6 +41,9 @@ jobs:
   fuzz-windows:
     name: Fuzz Windows
     uses: ericcornelissen/shescape/.github/workflows/reusable-fuzz.yml@main
+    concurrency:
+      group: fuzz-no-shell
+      cancel-in-progress: false
     with:
       duration: 600 # seconds == 10 minutes
       os: windows-2022
diff --git a/.github/workflows/fuzz-powershell.yml b/.github/workflows/fuzz-powershell.yml
index 0fcd657c8..49ed2152d 100644
--- a/.github/workflows/fuzz-powershell.yml
+++ b/.github/workflows/fuzz-powershell.yml
@@ -15,11 +15,15 @@ on:
     branches:
       - main
   schedule:
-    - cron: "20 2 * * *"
+    - cron: "0 2 * * *"
   workflow_dispatch: ~
 
 permissions: read-all
 
+concurrency:
+  group: fuzz
+  cancel-in-progress: false
+
 jobs:
   fuzz:
     name: Fuzz
diff --git a/.github/workflows/fuzz-zsh.yml b/.github/workflows/fuzz-zsh.yml
index aca12d4f7..d8d5cfbd4 100644
--- a/.github/workflows/fuzz-zsh.yml
+++ b/.github/workflows/fuzz-zsh.yml
@@ -15,11 +15,15 @@ on:
     branches:
       - main
   schedule:
-    - cron: "30 2 * * *"
+    - cron: "0 2 * * *"
   workflow_dispatch: ~
 
 permissions: read-all
 
+concurrency:
+  group: fuzz
+  cancel-in-progress: false
+
 jobs:
   fuzz:
     name: Fuzz