diff --git a/.github/workflows/pypi-build-artifacts.yml b/.github/workflows/pypi-build-artifacts.yml
index 20149a0e1a..da282c6b46 100644
--- a/.github/workflows/pypi-build-artifacts.yml
+++ b/.github/workflows/pypi-build-artifacts.yml
@@ -31,6 +31,7 @@ jobs:
     name: Build artifacts for PyPi on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     strategy:
+      max-parallel: 15
       matrix:
         os: [ ubuntu-latest, ubuntu-24.04-arm, windows-latest, macos-15-intel, macos-latest ]
 
diff --git a/.github/workflows/python-ci.yml b/.github/workflows/python-ci.yml
index eb3f726563..ddc71d174b 100644
--- a/.github/workflows/python-ci.yml
+++ b/.github/workflows/python-ci.yml
@@ -46,6 +46,7 @@ jobs:
   lint-and-unit-test:
     runs-on: ubuntu-latest
     strategy:
+      max-parallel: 15
       fail-fast: true
       matrix:
         python: ['3.10', '3.11', '3.12', '3.13']
diff --git a/.github/workflows/svn-build-artifacts.yml b/.github/workflows/svn-build-artifacts.yml
index 9d72e1db1c..1dbd6ac574 100644
--- a/.github/workflows/svn-build-artifacts.yml
+++ b/.github/workflows/svn-build-artifacts.yml
@@ -31,6 +31,7 @@ jobs:
     name: Build artifacts for SVN on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     strategy:
+      max-parallel: 15
       matrix:
         os: [ ubuntu-latest, ubuntu-24.04-arm, windows-latest, macos-15-intel, macos-latest ]