diff --git a/.github/workflows/deploytest.yml b/.github/workflows/deploytest.yml
index b5c3fef9a3..cb4e4a2346 100644
--- a/.github/workflows/deploytest.yml
+++ b/.github/workflows/deploytest.yml
@@ -61,7 +61,9 @@ jobs:
           ${{ runner.os }}-pyprod-
     - name: Install pip-tools and python dependencies
       run: |
-        python -m pip install --upgrade pip
+        # Pin pip to 25.2 to avoid incompatibility with pip-tools and 25.3
+        # see https://github.com/jazzband/pip-tools/issues/2252
+        python -m pip install pip==25.2
         pip install pip-tools
         pip-sync requirements.txt
     - name: Use pnpm
diff --git a/.github/workflows/pythontest.yml b/.github/workflows/pythontest.yml
index ec99bec269..5467f8a47c 100644
--- a/.github/workflows/pythontest.yml
+++ b/.github/workflows/pythontest.yml
@@ -82,7 +82,9 @@ jobs:
           ${{ runner.os }}-pytest-
     - name: Install pip-tools and python dependencies
       run: |
-        python -m pip install --upgrade pip
+        # Pin pip to 25.2 to avoid incompatibility with pip-tools and 25.3
+        # see https://github.com/jazzband/pip-tools/issues/2252
+        python -m pip install pip==25.2
         pip install pip-tools
         pip-sync requirements.txt requirements-dev.txt
     - name: Test pytest