diff --git a/.github/workflows/ci-tests.yml b/.github/workflows/ci-tests.yml
index 8b20b55d..323d36d7 100644
--- a/.github/workflows/ci-tests.yml
+++ b/.github/workflows/ci-tests.yml
@@ -52,7 +52,7 @@ jobs:
               run: phpcs --report-width=120 .
 
             - name: Python linting
-              run: pylint nominatim
+              run: pylint --extension-pkg-whitelist=osmium nominatim
 
             - name: PHP unit tests
               run: phpunit ./
diff --git a/CMakeLists.txt b/CMakeLists.txt
index c6f63a8b..d579bf1a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -191,7 +191,7 @@ if (BUILD_TESTS)
     if (PYLINT)
         message(STATUS "Using pylint binary ${PYLINT}")
         add_test(NAME pylint
-                 COMMAND ${PYLINT} nominatim
+                 COMMAND ${PYLINT} --extension-pkg-whitelist=osmium nominatim
                  WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
     else()
         message(WARNING "pylint not found. Python linting tests disabled.")
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 552d1da1..6798c39d 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -53,7 +53,7 @@ The coding style is enforced with PHPCS and pylint. It can be tested with:
 
 ```
 phpcs --report-width=120 --colors .
-pylint3 nominatim
+pylint3 --extension-pkg-whitelist=osmium nominatim
 ```
 
 ## Testing