diff --git a/pkgs/development/python-modules/certifi/default.nix b/pkgs/development/python-modules/certifi/default.nix
index 40b3338fdec..ef8d1e52fe0 100644
--- a/pkgs/development/python-modules/certifi/default.nix
+++ b/pkgs/development/python-modules/certifi/default.nix
@@ -5,11 +5,11 @@
 
 buildPythonPackage rec {
   pname = "certifi";
-  version = "2018.8.24";
+  version = "2018.10.15";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "376690d6f16d32f9d1fe8932551d80b23e9d393a8578c5633a2ed39a64861638";
+    sha256 = "6d58c986d22b038c8c0df30d639f23a3e6d172a05c3583e766f4c0b785c0986a";
   };
 
   meta = {