diff --git a/requirements.txt b/requirements.txt
index 64ad196f..bf80c74f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 jinja2==2.10
 pgpubsub
 numpy==1.14.3
-PyYAML==3.12
+PyYAML==5.4
 cryptography==2.2.2
 scikit-learn==0.19.1
 python-geoip==1.2
diff --git a/requirements_unit_tests.txt b/requirements_unit_tests.txt
index 14ac127a..a5f7a15d 100644
--- a/requirements_unit_tests.txt
+++ b/requirements_unit_tests.txt
@@ -1,7 +1,7 @@
 jinja2==2.10
 pgpubsub
 numpy==1.14.3
-PyYAML==3.12
+PyYAML==5.4
 cryptography==2.2.2
 scikit-learn==0.19.1
 python-geoip==1.2