diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b61b784..dab4e3d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -41,10 +41,10 @@ jobs:
       uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
+    - name: Install test dependencies
       run: |
-        python -m pip install --upgrade pip
-        python -m pip install -r requirements.txt -r requirements_dev.txt
+        python -mpip install --upgrade pip
+        python -mpip install -r requirements_dev.txt
     - name: tests
       run: |
         python setup.py develop
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 6c05a61..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1 +0,0 @@
-pyyaml==5.1
diff --git a/requirements_dev.txt b/requirements_dev.txt
index eb111cc..a2f8067 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1 +1,2 @@
+pyyaml~=5.4.0
 tox==3.9.0
diff --git a/setup.py b/setup.py
index a629625..f8018eb 100644
--- a/setup.py
+++ b/setup.py
@@ -194,7 +194,7 @@ class sdist(_sdist):
     zip_safe=False,
     url="https://github.com/ua-parser/uap-python",
     include_package_data=True,
-    setup_requires=["pyyaml"],
+    setup_requires=["pyyaml ~= 5.4.0"],
     install_requires=[],
     cmdclass=cmdclass,
     classifiers=[
diff --git a/ua_parser/user_agent_parser.py b/ua_parser/user_agent_parser.py
index 6f9c7d4..7e2bebc 100644
--- a/ua_parser/user_agent_parser.py
+++ b/ua_parser/user_agent_parser.py
@@ -472,7 +472,8 @@ def GetFilters(
     import yaml
 
     try:
-        # Try and use libyaml bindings if available since faster
+        # Try and use libyaml bindings if available since faster,
+        # pyyaml doesn't do it by default (yaml/pyyaml#436)
         from yaml import CSafeLoader as SafeLoader
     except ImportError:
         from yaml import SafeLoader