diff --git a/codechecker_common/requirements_py/dev/requirements.txt b/codechecker_common/requirements_py/dev/requirements.txt
index 29c533892b..42e031b244 100644
--- a/codechecker_common/requirements_py/dev/requirements.txt
+++ b/codechecker_common/requirements_py/dev/requirements.txt
@@ -3,3 +3,4 @@ portalocker==2.2.1
 coverage==5.5.0
 mypy==0.812
 mypy_extensions==0.4.3
+PyYAML==5.4.1
diff --git a/web/requirements.txt b/web/requirements.txt
index cab4852929..679a516a17 100644
--- a/web/requirements.txt
+++ b/web/requirements.txt
@@ -6,6 +6,7 @@ psutil==5.8.0
 mypy_extensions==0.4.3
 thrift==0.13.0
 gitpython==3.1.11
+PyYAML==5.4.1
 
 ./api/py/codechecker_api/dist/codechecker_api.tar.gz
 ./api/py/codechecker_api_shared/dist/codechecker_api_shared.tar.gz