diff --git a/.github/workflows/humble-build.yml b/.github/workflows/humble-build.yml
index 4c0188e5..c799571f 100644
--- a/.github/workflows/humble-build.yml
+++ b/.github/workflows/humble-build.yml
@@ -12,7 +12,7 @@ on:
       - humble
   schedule:
     # Run every morning to detect flakiness and broken dependencies
-    - cron: '28 6 * * *'
+    - cron: '28 6 * * MON-FRI'
 
 concurrency:
   # cancel previous runs of the same workflow, except for pushes on master branch
diff --git a/.github/workflows/jazzy-build.yml b/.github/workflows/jazzy-build.yml
index 8d2eebaa..e26a87f3 100644
--- a/.github/workflows/jazzy-build.yml
+++ b/.github/workflows/jazzy-build.yml
@@ -12,7 +12,7 @@ on:
       - jazzy
   schedule:
     # Run every morning to detect flakiness and broken dependencies
-    - cron: '28 6 * * *'
+    - cron: '28 6 * * MON-FRI'
 
 concurrency:
   # cancel previous runs of the same workflow, except for pushes on jazzy branch
diff --git a/.github/workflows/prerelease.yaml b/.github/workflows/prerelease.yaml
deleted file mode 100644
index 477550f1..00000000
--- a/.github/workflows/prerelease.yaml
+++ /dev/null
@@ -1,26 +0,0 @@
-# This config uses industrial_ci (https://github.com/ros-industrial/industrial_ci.git).
-# For troubleshooting, see readme (https://github.com/ros-industrial/industrial_ci/blob/master/README.rst)
-
-name: pre-release
-
-on:
-  workflow_dispatch:
-
-jobs:
-  default:
-    strategy:
-      fail-fast: false
-      matrix:
-        distro: [foxy, galactic, rolling]
-
-    env:
-      ROS_DISTRO: ${{ matrix.distro }}
-      PRERELEASE: true
-      BASEDIR: ${{ github.workspace }}/.work
-
-    name: "${{ matrix.distro }}"
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - name: industrial_ci
-        uses: ros-industrial/industrial_ci@master
diff --git a/.github/workflows/rolling-build.yml b/.github/workflows/rolling-build.yml
index 1f6ab224..9b2cbd39 100644
--- a/.github/workflows/rolling-build.yml
+++ b/.github/workflows/rolling-build.yml
@@ -12,7 +12,7 @@ on:
       - master
   schedule:
     # Run every morning to detect flakiness and broken dependencies
-    - cron: '28 6 * * *'
+    - cron: '28 6 * * MON-FRI'
 
 concurrency:
   # cancel previous runs of the same workflow, except for pushes on master branch