diff --git a/Pipfile.lock b/Pipfile.lock
index 9950331..00884af 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -33,10 +33,10 @@
         },
         "certifi": {
             "hashes": [
-                "sha256:59b7658e26ca9c7339e00f8f4636cdfe59d34fa37b9b04f6f9e9926b3cece1a5",
-                "sha256:b26104d6835d1f5e49452a26eb2ff87fe7090b89dfcaee5ea2212697e1e1d7ae"
+                "sha256:e4f3620cfea4f83eedc95b24abd9cd56f3c4b146dd0177e83a21b4eb49e21e50",
+                "sha256:fd7c7c74727ddcf00e9acd26bba8da604ffec95bf1c2144e67aff7a8b50e6cef"
             ],
-            "version": "==2019.3.9"
+            "version": "==2019.9.11"
         },
         "chardet": {
             "hashes": [