diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0a861569f..ed799d7cd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,5 +12,5 @@ jobs:
           cache: pip
           cache-dependency-path: '**/requirements*.txt'
       - run: pip install -r requirements_dev.txt
-      - run: pytest -W error --cov-report=lcov:coverage/lcov.info --cov extension_explorer
+      - run: coverage run --source=extension_explorer -m pytest -W error
       - uses: coverallsapp/github-action@v2
diff --git a/requirements.txt b/requirements.txt
index 3bbd0e6c4..0eb47740b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,6 +28,8 @@ docutils==0.20.1
     # via
     #   myst-parser
     #   sphinx
+exceptiongroup==1.2.2
+    # via cattrs
 flask==3.0.0
     # via
     #   -r requirements.in
@@ -145,6 +147,10 @@ sphinxcontrib-serializinghtml==1.1.9
     # via sphinx
 text-unidecode==1.3
     # via python-slugify
+tomli==2.0.1
+    # via mdformat
+typing-extensions==4.12.2
+    # via cattrs
 url-normalize==1.4.3
     # via requests-cache
 urllib3==2.2.2
diff --git a/requirements_dev.in b/requirements_dev.in
index ce171729e..a04e0bb96 100644
--- a/requirements_dev.in
+++ b/requirements_dev.in
@@ -1,5 +1,6 @@
 -r requirements.txt
+coverage
 libsass
+pre-commit
 pytest
-pytest-cov
 pytest-flask
diff --git a/requirements_dev.txt b/requirements_dev.txt
index 54fcbf782..aa8b00d46 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -29,6 +29,8 @@ certifi==2024.7.4
     # via
     #   -r requirements.txt
     #   requests
+cfgv==3.4.0
+    # via pre-commit
 charset-normalizer==3.1.0
     # via
     #   -r requirements.txt
@@ -38,12 +40,21 @@ click==8.1.3
     #   -r requirements.txt
     #   flask
 coverage==7.6.1
-    # via pytest-cov
+    # via -r requirements_dev.in
+distlib==0.3.8
+    # via virtualenv
 docutils==0.20.1
     # via
     #   -r requirements.txt
     #   myst-parser
     #   sphinx
+exceptiongroup==1.2.2
+    # via
+    #   -r requirements.txt
+    #   cattrs
+    #   pytest
+filelock==3.15.4
+    # via virtualenv
 flask==3.0.0
     # via
     #   -r requirements.txt
@@ -56,6 +67,8 @@ flask-env==2.0.0
     # via -r requirements.txt
 frozen-flask==1.0.1
     # via -r requirements.txt
+identify==2.6.0
+    # via pre-commit
 idna==3.7
     # via
     #   -r requirements.txt
@@ -120,6 +133,8 @@ mdurl==0.1.0
     #   markdown-it-py
 myst-parser==2.0.0
     # via -r requirements.txt
+nodeenv==1.9.1
+    # via pre-commit
 ocds-babel==0.3.5
     # via -r requirements.txt
 ocdsextensionregistry==0.3.8
@@ -143,8 +158,11 @@ platformdirs==4.2.0
     # via
     #   -r requirements.txt
     #   requests-cache
+    #   virtualenv
 pluggy==0.13.1
     # via pytest
+pre-commit==3.8.0
+    # via -r requirements_dev.in
 pygments==2.15.1
     # via
     #   -r requirements.txt
@@ -152,10 +170,7 @@ pygments==2.15.1
 pytest==7.2.0
     # via
     #   -r requirements_dev.in
-    #   pytest-cov
     #   pytest-flask
-pytest-cov==4.0.0
-    # via -r requirements_dev.in
 pytest-flask==1.3.0
     # via -r requirements_dev.in
 python-slugify==4.0.1
@@ -168,6 +183,7 @@ pyyaml==6.0.1
     # via
     #   -r requirements.txt
     #   myst-parser
+    #   pre-commit
 requests==2.32.2
     # via
     #   -r requirements.txt
@@ -221,6 +237,15 @@ text-unidecode==1.3
     # via
     #   -r requirements.txt
     #   python-slugify
+tomli==2.0.1
+    # via
+    #   -r requirements.txt
+    #   mdformat
+    #   pytest
+typing-extensions==4.12.2
+    # via
+    #   -r requirements.txt
+    #   cattrs
 url-normalize==1.4.3
     # via
     #   -r requirements.txt
@@ -230,6 +255,8 @@ urllib3==2.2.2
     #   -r requirements.txt
     #   requests
     #   requests-cache
+virtualenv==20.26.3
+    # via pre-commit
 werkzeug==3.0.3
     # via
     #   -r requirements.txt