diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index fb7b61955..12c2c7e74 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -109,7 +109,7 @@ jobs:
       # related: https://stackoverflow.com/questions/64708371/how-to-run-github-workflow-on-every-commit-of-a-push
       env:
         BEFORE: ${{ github.event.before }}
-        NUM:    20
+        NUM:    5
       shell: bash
       run: |
         RANGE=${BEFORE:-origin/master}..${GITHUB_HEAD_REF:+origin/$GITHUB_HEAD_REF}
diff --git a/.github/workflows/mac.yml b/.github/workflows/mac.yml
index 62f887311..2fbd9f975 100644
--- a/.github/workflows/mac.yml
+++ b/.github/workflows/mac.yml
@@ -66,7 +66,7 @@ jobs:
       # related: https://stackoverflow.com/questions/64708371/how-to-run-github-workflow-on-every-commit-of-a-push
       env:
         BEFORE: ${{ github.event.before }}
-        NUM:    20
+        NUM:    5
       shell: bash
       run: |
         RANGE=${BEFORE:-origin/master}..${GITHUB_HEAD_REF:+origin/$GITHUB_HEAD_REF}
diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index 7a9df8661..438ee0b66 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -77,7 +77,7 @@ jobs:
       # related: https://stackoverflow.com/questions/64708371/how-to-run-github-workflow-on-every-commit-of-a-push
       env:
         BEFORE: ${{ github.event.before }}
-        NUM:    20
+        NUM:    5
       shell: bash
       run: |
         RANGE=${BEFORE:-origin/master}..${GITHUB_HEAD_REF:+origin/$GITHUB_HEAD_REF}
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 1ca3c3265..1ac81b642 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -59,7 +59,7 @@ jobs:
       # related: https://stackoverflow.com/questions/64708371/how-to-run-github-workflow-on-every-commit-of-a-push
       env:
         BEFORE: ${{ github.event.before }}
-        NUM:    20
+        NUM:    5
       shell: bash
       run: |
         RANGE=${BEFORE:-origin/master}..${GITHUB_HEAD_REF:+origin/$GITHUB_HEAD_REF}