diff --git a/Pipfile.lock b/Pipfile.lock
index cac70a6..f61248a 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -3,19 +3,6 @@
         "hash": {
             "sha256": "ca76ed14a89d8910726c4649f22cdcd899f7bb3f73f73596cd908607a003423d"
         },
-        "host-environment-markers": {
-            "implementation_name": "cpython",
-            "implementation_version": "3.6.4",
-            "os_name": "posix",
-            "platform_machine": "x86_64",
-            "platform_python_implementation": "CPython",
-            "platform_release": "17.3.0",
-            "platform_system": "Darwin",
-            "platform_version": "Darwin Kernel Version 17.3.0: Thu Nov  9 18:09:22 PST 2017; root:xnu-4570.31.3~1/RELEASE_X86_64",
-            "python_full_version": "3.6.4",
-            "python_version": "3.6",
-            "sys_platform": "darwin"
-        },
         "pipfile-spec": 6,
         "requires": {},
         "sources": [
@@ -219,13 +206,22 @@
         },
         "tornado": {
             "hashes": [
-                "sha256:92b7ca81e18ba9ec3031a7ee73d4577ac21d41a0c9b775a9182f43301c3b5f8e",
-                "sha256:b36298e9f63f18cad97378db2222c0e0ca6a55f6304e605515e05a25483ed51a",
-                "sha256:ab587996fe6fb9ce65abfda440f9b61e4f9f2cf921967723540679176915e4c3",
-                "sha256:5ef073ac6180038ccf99411fe05ae9aafb675952a2c8db60592d5daf8401f803",
-                "sha256:6d14e47eab0e15799cf3cdcc86b0b98279da68522caace2bd7ce644287685f0a"
-            ],
-            "version": "==4.5.3"
+                "sha256:02420a0eb7bf617257b9935e2b754d1b63897525d8a289c9d65690d580b4dcf7",
+                "sha256:13ce6e3396c24e2808774741331638ee6c2f50b114b97a55c5b442df65fd9692",
+                "sha256:253b76040ee3bab8bcf7ba9feb136436a3787208717a1fb9f2c16b744fba7331",
+                "sha256:308473f4cc5a76227157cdf904de33ac268af770b2c5f05ca6c1161d82fdd95e",
+                "sha256:5cae6145f4cdf5ab24744526cc0f55a17d76f02c98f4cff9daa08ae9a217448a",
+                "sha256:84ceece391e8eb9b2b95578db65e920d2a61070260594819589609ba9bc6308c",
+                "sha256:908e7d64567cecd4c2b458075589a775063453aeb1d2a1853eedb806922f568b",
+                "sha256:9e9ca370f717997cb85606d074b0e5b247282cf5e2e1611568b8821afe0342d6",
+                "sha256:b77e9dfa7ed69754a54c89d82ef746398be82f749df69c4d3abe75c4d1ff4888",
+                "sha256:caec6314ce8a81cf69bd89909f4b633b9f523834dc1a352021775d45e51d9401",
+                "sha256:d50065ba7fd11d3bd41bcad0825227cc9a95154bad83239357094c36708001f7",
+                "sha256:e0a36e1bc684dca10b1aa75a31df8bdfed656831489bc1e6a6ebed05dc1ec365"
+            ],
+            "index": "pypi",
+            "markers": "python_version >= '3.9'",
+            "version": "==6.5.1"
         },
         "urllib3": {
             "hashes": [