diff --git a/playground/Pipfile.lock b/playground/Pipfile.lock
index 222e647..3bfe1ef 100644
--- a/playground/Pipfile.lock
+++ b/playground/Pipfile.lock
@@ -186,11 +186,12 @@
         },
         "pygments": {
             "hashes": [
-                "sha256:bc9591213a8f0e0ca1a5e68a479b4887fdc3e75d0774e5c71c31920c427de435",
-                "sha256:df49d09b498e83c1a73128295860250b0b7edd4c723a32e9bc0d295c7c2ec337"
+                "sha256:77a3299119af881904cd5ecd1ac6a66214b6e9bed1f2db16993b54adede64094",
+                "sha256:f7e36cffc4c517fbc252861b9a6e4644ca0e5abadf9a113c72d1358ad09b9500"
             ],
-            "markers": "python_version >= '3.5'",
-            "version": "==2.7.4"
+            "index": "pypi",
+            "markers": "python_version >= '3.7'",
+            "version": "==2.15.0"
         },
         "requests": {
             "hashes": [