diff --git a/requirements-dev.txt b/requirements-dev.txt
index 2e3500d..bac063d 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -10,7 +10,7 @@ pluggy==0.6.0             # via tox
 py==1.5.2                 # via tox
 pycodestyle==2.3.1
 pytz==2018.3              # via django
-pyyaml==3.12
+pyyaml==5.4
 six==1.11.0               # via mock, tox
 tox==2.9.1
 virtualenv==15.1.0        # via tox
diff --git a/requirements-test.txt b/requirements-test.txt
index fe51e86..9b1d84d 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -13,5 +13,5 @@ py==1.5.2                 # via pytest
 pytest==3.4.2
 pytest-cov==2.5.1
 pytest-django==3.1.2
-pyyaml==3.12
+pyyaml==5.4
 six==1.11.0               # via mock, pytest