diff --git a/docs/Pipfile.lock b/docs/Pipfile.lock
index cc563a0..f9f529e 100644
--- a/docs/Pipfile.lock
+++ b/docs/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "8fb24c8e1e9348380965a915514e6ee22ea19e028239cf20a8ea91748e774c34"
+            "sha256": "c3251e495bec2bb5433818023939624f4bb4e6cc3c83339126593caf1b141a25"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -232,10 +232,12 @@
         },
         "urllib3": {
             "hashes": [
-                "sha256:2f4da4594db7e1e110a944bb1b551fdf4e6c136ad42e4234131391e21eb5b0df",
-                "sha256:e7b021f7241115872f92f43c6508082facffbd1c048e3c6e2bb9c2a157e28937"
+                "sha256:37a0344459b199fce0e80b0d3569837ec6b6937435c5244e7fd73fa6006830f3",
+                "sha256:3e3d753a8618b86d7de333b4223005f68720bcd6a7d2bcb9fbd2229ec7c1e429"
             ],
-            "version": "==1.26.4"
+            "index": "pypi",
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'",
+            "version": "==1.26.19"
         }
     },
     "develop": {