diff --git a/poetry.lock b/poetry.lock
index b76522b..ac7bfd4 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1180,7 +1180,7 @@ docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
 testing = ["jaraco.itertools", "func-timeout"]
 
 [metadata]
-content-hash = "416c043c10ed68323afdf9aa286261be5b7787e6408b4a3b056286129871e303"
+content-hash = "495be8d729b8b128b871a2adcfc04d8f74716b05fe636a5b99080ccc1c9bd0fc"
 python-versions = "^3.6"
 
 [metadata.files]
diff --git a/pyproject.toml b/pyproject.toml
index 004d87e..4a23a9c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,6 @@ aiofile = "^1.5.2"
 aiofiles = "^0.4.0"
 aredis = "^1.1.7"
 click = "^7.0"
-cryptography = "^2.8"
 fastapi = "^0.47"
 httpx = "^0.11"
 loguru = "^0.4.0"