diff --git a/requirements.txt b/requirements.txt
index 7705be8..f04a547 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-certifi==2019.11.28
+certifi==2020.4.5.2
 chardet==3.0.4
 codecov==2.0.22
 coverage==5.1