diff --git a/requirements.txt b/requirements.txt
index 0218cd9..de7f98f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 certifi==2020.6.20
-cffi==1.14.3
+cffi==1.15.1
 chardet==3.0.4
 elasticsearch==7.16.1
 GDAL==3.1.3