diff --git a/requirements.txt b/requirements.txt
index 5493790..11bb2ee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ python-editor==1.0.4      # via alembic
 python-frontmatter==0.4.5
 python-social-auth==0.3.6
 python3-openid==3.1.0     # via social-auth-core
-pyyaml==5.1               # via python-frontmatter
+pyyaml==5.4               # via python-frontmatter
 requests-oauthlib==1.2.0  # via social-auth-core
 requests==2.21.0          # via requests-oauthlib, social-auth-core
 sentry-sdk[flask]==0.7.14