diff --git a/.github/workflows/build_and_test.yaml b/.github/workflows/build_and_test.yaml
index 581a432c..4c7d542f 100644
--- a/.github/workflows/build_and_test.yaml
+++ b/.github/workflows/build_and_test.yaml
@@ -56,7 +56,7 @@ jobs:
 
     - name: Install dependencies
       run: |
-          pip install -r tests/integration/requirements.txt
+          pip install --require-hashes -r tests/integration/requirements.txt
 
     - name: Execute integration tests
       run: |
diff --git a/.github/workflows/compliance.yaml b/.github/workflows/compliance.yaml
index 55a5dc6d..c42acfb4 100644
--- a/.github/workflows/compliance.yaml
+++ b/.github/workflows/compliance.yaml
@@ -17,7 +17,7 @@ jobs:
       run: |
         sudo apt update
         sudo apt -qy --no-install-recommends install clang-format-14
-        pip3 install -r tools/requirements-compliance.txt
+        pip3 install --require-hashes -r tools/requirements-compliance.txt
 
     - name: Check commits with gitlint
       run: |
diff --git a/tests/integration/requirements.txt b/tests/integration/requirements.txt
index f4c7ef01..4c1a45a1 100644
--- a/tests/integration/requirements.txt
+++ b/tests/integration/requirements.txt
@@ -1,2 +1,13 @@
-pexpect==4.9.0
-pytest==8.3.3
+# Our (direct) dependencies
+pexpect==4.9.0 --hash=sha256:7236d1e080e4936be2dc3e326cec0af72acf9212a7e1d060210e70a47e253523
+pytest==8.3.3 --hash=sha256:a6853c7375b2663155079443d2e45de913a911a11d669df02a50814944db57b2
+
+# Dependencies of our dependencies (aka transitive dependencies)
+
+## for pexpect
+ptyprocess==0.7.0 --hash=sha256:4b41f3967fce3af57cc7e94b888626c18bf37a083e3651ca8feeb66d492fef35
+
+## for pytest
+iniconfig==2.0.0 --hash=sha256:b6a85871a79d2e3b22d2d1b94ac2824226a63c6b741c88f7ae975f18b6778374
+packaging==24.2 --hash=sha256:09abb1bccd265c01f4a3aa3f7a7db064b36514d2cba19a2f694fe6150451a759
+pluggy==1.5.0 --hash=sha256:44e1ad92c8ca002de6377e165f3e0f1be63266ab4d554740532335b9d75ea669
diff --git a/tools/requirements-compliance.txt b/tools/requirements-compliance.txt
index 94e7e6e6..0b0df5bf 100644
--- a/tools/requirements-compliance.txt
+++ b/tools/requirements-compliance.txt
@@ -1,4 +1,29 @@
-cmake-format==0.6.13
-gitlint==0.19
-pylint==3.3.1
+# Our (direct) dependencies
+cmake-format==0.6.13 --hash=sha256:ec7ed949101e5f0b7bc19317d122b83ccbc28fd766c41c93094845719667c56e
+gitlint==0.19 --hash=sha256:3a566c6f641e054be26ecf67210c237e4fe45472f6606761c9fea7b44e570d3c
+pylint==3.3.1 --hash=sha256:2f846a466dd023513240bc140ad2dd73bfc080a5d85a710afdb728c420a5a2b9
+
+# For convenience
 -r ../tests/integration/requirements.txt
+
+# Dependencies of our dependencies (aka transitive dependencies)
+
+## for cmake-format
+cmakelang==0.6.13 --hash=sha256:764b9467195c7c36453d60a829f30229720d26c7dffd41cb516b99bd9c7daf4e
+six==1.16.0 --hash=sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254
+
+## for gitlint
+arrow==1.2.3 --hash=sha256:5a49ab92e3b7b71d96cd6bfcc4df14efefc9dfa96ea19045815914a6ab6b1fe2
+click==8.1.3 --hash=sha256:bb4d8133cb15a609f44e8213d9b391b0809795062913b383c62be0ee95b1db48
+dill==0.3.9 --hash=sha256:468dff3b89520b474c0397703366b7b95eebe6303f108adf9b19da1f702be87a
+gitlint-core==0.19.0 --hash=sha256:b5c66ac380eae983bed3fa21e5dd35c03d93f3024c7a2bce3a0d1fa9a43c9494
+python-dateutil==2.9.0 --hash=sha256:cbf2f1da5e6083ac2fbfd4da39a25f34312230110440f424a14c7558bb85d82e
+sh==1.14.3 --hash=sha256:e4045b6c732d9ce75d571c79f5ac2234edd9ae4f5fa9d59b09705082bdca18c7
+types-python-dateutil==2.9.0.20241003 --hash=sha256:250e1d8e80e7bbc3a6c99b907762711d1a1cdd00e978ad39cb5940f6f0a87f3d
+
+## for pylint
+astroid==3.3.5 --hash=sha256:a9d1c946ada25098d790e079ba2a1b112157278f3fb7e718ae6a9252f5835dc8
+isort==5.13.2 --hash=sha256:8ca5e72a8d85860d5a3fa69b8745237f2939afe12dbf656afbcb47fe72d947a6
+mccabe==0.7.0 --hash=sha256:6c2d30ab6be0e4a46919781807b4f0d834ebdd6c6e3dca0bda5a15f863427b6e
+platformdirs==4.3.6 --hash=sha256:73e575e1408ab8103900836b97580d5307456908a03e92031bab39e4554cc3fb
+tomlkit==0.13.2 --hash=sha256:7a974427f6e119197f670fbbbeae7bef749a6c14e793db934baefc1b5f03efde