diff --git a/requirements.txt b/requirements.txt
index 28a509b..b639c58 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,4 +4,8 @@
 #
 #    pip-compile --output-file requirements.txt requirements.in
 #
-requests==2.12.0
+certifi==2018.11.29       # via requests
+chardet==3.0.4            # via requests
+idna==2.8                 # via requests
+requests==2.21.0
+urllib3==1.24.1           # via requests