diff --git a/.github/workflows/linux-ci.yml b/.github/workflows/linux-ci.yml
index 3ec2eea47..102f359a7 100644
--- a/.github/workflows/linux-ci.yml
+++ b/.github/workflows/linux-ci.yml
@@ -39,7 +39,7 @@ jobs:
           python3 \
           python3-setuptools
     - name: Install Python Dependencies
-      run: sudo pip3 install fonttools meson==0.56.0 gcovr==5.0
+      run: sudo pip3 install -r .ci/requirements.txt --require-hashes
     - name: Setup Meson
       run: |
         ccache --version
diff --git a/.github/workflows/macos-ci.yml b/.github/workflows/macos-ci.yml
index e84cb38b3..7ada545fe 100644
--- a/.github/workflows/macos-ci.yml
+++ b/.github/workflows/macos-ci.yml
@@ -35,7 +35,7 @@ jobs:
           ninja \
           pkg-config
     - name: Install Python Dependencies
-      run: pip3 install fonttools gcovr==5.0
+      run: pip3 install -r .ci/requirements.txt --require-hashes
     - name: Setup Meson
       run: |
         export PKG_CONFIG_PATH="/usr/local/opt/icu4c/lib/pkgconfig:/usr/local/opt/libffi/lib/pkgconfig"
diff --git a/.github/workflows/msvc-ci.yml b/.github/workflows/msvc-ci.yml
index 57ab3af2c..d62bed784 100644
--- a/.github/workflows/msvc-ci.yml
+++ b/.github/workflows/msvc-ci.yml
@@ -44,7 +44,7 @@ jobs:
         arch : ${{ matrix.ARCH }}
     - name: Install Python Dependencies
       run: |
-        pip install --upgrade meson ninja fonttools
+        pip3 install -r .ci/requirements.txt --require-hashes
     - name: Setup Meson
       run: |
         sccache --version
diff --git a/.github/workflows/msys2-ci.yml b/.github/workflows/msys2-ci.yml
index d825fd043..753807c0c 100644
--- a/.github/workflows/msys2-ci.yml
+++ b/.github/workflows/msys2-ci.yml
@@ -56,7 +56,7 @@ jobs:
           mingw-w64-${{ matrix.MSYS2_ARCH }}-python-pip
     - name: Install Python Dependencies
       run: |
-        pip install --upgrade fonttools
+        pip3 install -r .ci/requirements.txt --require-hashes
     - name: Setup Meson
       run: |
         meson setup build \