diff --git a/.github/workflows/cygwin-530-trunk.yml b/.github/workflows/cygwin-530-trunk.yml
index 5551247e..c1ffac7d 100644
--- a/.github/workflows/cygwin-530-trunk.yml
+++ b/.github/workflows/cygwin-530-trunk.yml
@@ -1,6 +1,9 @@
 name: Cygwin trunk
 
 on:
+  schedule:
+    # Every Monday morning, at 1:11 UTC
+    - cron: '11 1 * * 1'
   pull_request:
   push:
     branches:
diff --git a/.github/workflows/linux-530-trunk-32bit.yml b/.github/workflows/linux-530-trunk-32bit.yml
index 76134487..0589bf9e 100644
--- a/.github/workflows/linux-530-trunk-32bit.yml
+++ b/.github/workflows/linux-530-trunk-32bit.yml
@@ -1,6 +1,9 @@
 name: 32bit trunk
 
 on:
+  schedule:
+    # Every Monday morning, at 1:11 UTC
+    - cron: '11 1 * * 1'
   pull_request:
   push:
     branches:
diff --git a/.github/workflows/linux-530-trunk-bytecode.yml b/.github/workflows/linux-530-trunk-bytecode.yml
index 41bf6c51..d5784764 100644
--- a/.github/workflows/linux-530-trunk-bytecode.yml
+++ b/.github/workflows/linux-530-trunk-bytecode.yml
@@ -1,6 +1,9 @@
 name: Bytecode trunk
 
 on:
+  schedule:
+    # Every Monday morning, at 1:11 UTC
+    - cron: '11 1 * * 1'
   pull_request:
   push:
     branches:
diff --git a/.github/workflows/linux-530-trunk-debug.yml b/.github/workflows/linux-530-trunk-debug.yml
index e48a7d7e..25a05028 100644
--- a/.github/workflows/linux-530-trunk-debug.yml
+++ b/.github/workflows/linux-530-trunk-debug.yml
@@ -1,6 +1,9 @@
 name: Linux trunk debug
 
 on:
+  schedule:
+    # Every Monday morning, at 1:11 UTC
+    - cron: '11 1 * * 1'
   pull_request:
   push:
     branches:
diff --git a/.github/workflows/linux-530-trunk-fp.yml b/.github/workflows/linux-530-trunk-fp.yml
index bdf1a9e9..e4d4d105 100644
--- a/.github/workflows/linux-530-trunk-fp.yml
+++ b/.github/workflows/linux-530-trunk-fp.yml
@@ -1,6 +1,9 @@
 name: FP trunk
 
 on:
+  schedule:
+    # Every Monday morning, at 1:11 UTC
+    - cron: '11 1 * * 1'
   pull_request:
   push:
     branches:
diff --git a/.github/workflows/linux-530-trunk.yml b/.github/workflows/linux-530-trunk.yml
index a53c412f..71a805cc 100644
--- a/.github/workflows/linux-530-trunk.yml
+++ b/.github/workflows/linux-530-trunk.yml
@@ -1,6 +1,9 @@
 name: Linux trunk
 
 on:
+  schedule:
+    # Every Monday morning, at 1:11 UTC
+    - cron: '11 1 * * 1'
   pull_request:
   push:
     branches:
diff --git a/.github/workflows/macosx-arm64-530-trunk.yml b/.github/workflows/macosx-arm64-530-trunk.yml
index 8a5bac99..8f3ffa1b 100644
--- a/.github/workflows/macosx-arm64-530-trunk.yml
+++ b/.github/workflows/macosx-arm64-530-trunk.yml
@@ -1,6 +1,9 @@
 name: macOS-ARM64 trunk
 
 on:
+  schedule:
+    # Every Monday morning, at 1:11 UTC
+    - cron: '11 1 * * 1'
   pull_request:
   push:
     branches:
diff --git a/.github/workflows/macosx-intel-530-trunk.yml b/.github/workflows/macosx-intel-530-trunk.yml
index badd35be..197b4799 100644
--- a/.github/workflows/macosx-intel-530-trunk.yml
+++ b/.github/workflows/macosx-intel-530-trunk.yml
@@ -1,6 +1,9 @@
 name: macOS-intel trunk
 
 on:
+  schedule:
+    # Every Monday morning, at 1:11 UTC
+    - cron: '11 1 * * 1'
   pull_request:
   push:
     branches:
diff --git a/.github/workflows/mingw-530-trunk-bytecode.yml b/.github/workflows/mingw-530-trunk-bytecode.yml
index a4c1b641..2d9cec71 100644
--- a/.github/workflows/mingw-530-trunk-bytecode.yml
+++ b/.github/workflows/mingw-530-trunk-bytecode.yml
@@ -1,6 +1,9 @@
 name: MinGW bytecode trunk
 
 on:
+  schedule:
+    # Every Monday morning, at 1:11 UTC
+    - cron: '11 1 * * 1'
   pull_request:
   push:
     branches:
diff --git a/.github/workflows/mingw-530-trunk.yml b/.github/workflows/mingw-530-trunk.yml
index 14e2c17f..eb4c0031 100644
--- a/.github/workflows/mingw-530-trunk.yml
+++ b/.github/workflows/mingw-530-trunk.yml
@@ -1,6 +1,9 @@
 name: MinGW trunk
 
 on:
+  schedule:
+    # Every Monday morning, at 1:11 UTC
+    - cron: '11 1 * * 1'
   pull_request:
   push:
     branches:
diff --git a/.github/workflows/msvc-530-trunk-bytecode.yml b/.github/workflows/msvc-530-trunk-bytecode.yml
index d2a548d6..cb9c041b 100644
--- a/.github/workflows/msvc-530-trunk-bytecode.yml
+++ b/.github/workflows/msvc-530-trunk-bytecode.yml
@@ -1,6 +1,9 @@
 name: MSVC bytecode trunk
 
 on:
+  schedule:
+    # Every Monday morning, at 1:11 UTC
+    - cron: '11 1 * * 1'
   pull_request:
   push:
     branches:
diff --git a/.github/workflows/msvc-530-trunk.yml b/.github/workflows/msvc-530-trunk.yml
index 2966edef..cea60f51 100644
--- a/.github/workflows/msvc-530-trunk.yml
+++ b/.github/workflows/msvc-530-trunk.yml
@@ -1,6 +1,9 @@
 name: MSVC trunk
 
 on:
+  schedule:
+    # Every Monday morning, at 1:11 UTC
+    - cron: '11 1 * * 1'
   pull_request:
   push:
     branches: