diff --git a/Pipfile.lock b/Pipfile.lock
index 164c257..400ace0 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -231,11 +231,8 @@
             "version": "==1.1.1"
         },
         "mistune": {
-            "hashes": [
-                "sha256:59a3429db53c50b5c6bcc8a07f8848cb00d7dc8bdb431a4ab41920d201d4756e",
-                "sha256:88a1051873018da288eee8538d476dffe1262495144b33ecb586c4ab266bb8d4"
-            ],
-            "version": "==0.8.4"
+            "hashes": [],
+            "version": "==2.0.4"
         },
         "nbconvert": {
             "hashes": [