diff --git a/requirements.txt b/requirements.txt
index 623cc7a2..a383d6b4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-PyYAML==5.1
+PyYAML==5.4
 django==1.11.29
 mistune==0.7.3
 polib==1.0.3
diff --git a/setup.py b/setup.py
index 4d06a593..a3ce5c22 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 install_requires = [
     'polib==1.0.3',
     'mistune==0.7.3',
-    'PyYAML==5.1',
+    'PyYAML==5.4',
     'pyparsing==2.2.0',
     'lxml==4.6.2',
     'beautifulsoup4==4.9.3',