diff --git a/poetry.lock b/poetry.lock
index 5c2f155..c56a239 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -432,8 +432,8 @@ category = "main"
 description = "Ultra fast JSON encoder and decoder for Python"
 name = "ujson"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "2.0.3"
+python-versions = ">=3.5"
+version = "3.1.0"
 
 [[package]]
 category = "dev"
@@ -483,7 +483,8 @@ docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
 testing = ["pathlib2", "unittest2", "jaraco.itertools", "func-timeout"]
 
 [metadata]
-content-hash = "6c173080253c3ac650e495adec1d08a47017f750723521edbae94e596b0ebd48"
+content-hash = "8117695a3b840e561e063ed3a2664157cc6c349c1b1d2ae1476ef54045978844"
+lock-version = "1.0"
 python-versions = "^3.5"
 
 [metadata.files]
@@ -707,6 +708,7 @@ regex = [
     {file = "regex-2020.5.14.tar.gz", hash = "sha256:ce450ffbfec93821ab1fea94779a8440e10cf63819be6e176eb1973a6017aff5"},
 ]
 requests = [
+    {file = "requests-2.23.0-py2.7.egg", hash = "sha256:5d2d0ffbb515f39417009a46c14256291061ac01ba8f875b90cad137de83beb4"},
     {file = "requests-2.23.0-py2.py3-none-any.whl", hash = "sha256:43999036bfa82904b6af1d99e4882b560e5e2c68e5c4b0aa03b655f3d7d73fee"},
     {file = "requests-2.23.0.tar.gz", hash = "sha256:b3f43d496c6daba4493e7c431722aeb7dbc6288f52a6e04e7b6023b0247817e6"},
 ]
@@ -745,13 +747,23 @@ typed-ast = [
     {file = "typed_ast-1.4.1.tar.gz", hash = "sha256:8c8aaad94455178e3187ab22c8b01a3837f8ee50e09cf31f1ba129eb293ec30b"},
 ]
 ujson = [
-    {file = "ujson-2.0.3-cp27-cp27m-manylinux1_x86_64.whl", hash = "sha256:7ae13733d9467d16ccac2f38212cdee841b49ae927085c533425be9076b0bc9d"},
-    {file = "ujson-2.0.3-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:6217c63a36e9b26e9271e686d212397ce7fb04c07d85509dd4e2ed73493320f8"},
-    {file = "ujson-2.0.3-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:c8369ef49169804944e920c427e350182e33756422b69989c55608fc28bebf98"},
-    {file = "ujson-2.0.3-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:0c23f21e8d2b60efab57bc6ce9d1fb7c4e96f4bfefbf5a6043a3f3309e2a738a"},
-    {file = "ujson-2.0.3-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:3d1f4705a4ec1e48ff383a4d92299d8ec25e9a8158bcea619912440948117634"},
-    {file = "ujson-2.0.3-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:2ab88e330405315512afe9276f29a60e9b3439187b273665630a57ed7fe1d936"},
-    {file = "ujson-2.0.3.tar.gz", hash = "sha256:bd2deffc983827510e5145fb66e4cc0f577480c62fe0b4882139f8f7d27ae9a3"},
+    {file = "ujson-3.1.0-cp35-cp35m-macosx_10_14_x86_64.whl", hash = "sha256:585329c16eeb0992308545c7a05eee76c7f1c2042b08317aac64fef1e71e71a9"},
+    {file = "ujson-3.1.0-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:d40d53aa679994624960b1c40bc451c5d9e3a0779f6a04146b417e220ce8f7d4"},
+    {file = "ujson-3.1.0-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:b794a2ddba049daa1fe0f28c4652b54d0d06580e7d3bcae87b4c000fb242654f"},
+    {file = "ujson-3.1.0-cp35-cp35m-win_amd64.whl", hash = "sha256:0789837e7156e07890f2461ec1d9dc2ea4ef7c76fd36e46955d811485daf83b9"},
+    {file = "ujson-3.1.0-cp36-cp36m-macosx_10_14_x86_64.whl", hash = "sha256:f6e229fa9b7d8586f894d18a003703fea4620ff8e6d39c11499755ecec5b43fc"},
+    {file = "ujson-3.1.0-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:ebe1bc9536b93c697f042b6c39ed602ad7edd5ef139eb167d9c8e36594b24546"},
+    {file = "ujson-3.1.0-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:6a2fac9892996c3a46bd3fd8bbf739f19f85fc7ec9cdc11b014f76267c3ee76d"},
+    {file = "ujson-3.1.0-cp36-cp36m-win_amd64.whl", hash = "sha256:083778f4e64f90b4468e73e0baafcde0ab83bff85315d28a5b1287a3f5909e7f"},
+    {file = "ujson-3.1.0-cp37-cp37m-macosx_10_14_x86_64.whl", hash = "sha256:d3f28f64b33609be20f985baa72d43ccfdf87e50d47ca2791d26b9c2f348a35b"},
+    {file = "ujson-3.1.0-cp37-cp37m-manylinux1_i686.whl", hash = "sha256:3a049acf176dacbb79ee00b13a78fc2524c35c69400e34aa5f6ff0fc3fdbb1f0"},
+    {file = "ujson-3.1.0-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:c2be0d511e5dc302f190e510544c4d5fbbb4396632abe33b66e28dad26ea4325"},
+    {file = "ujson-3.1.0-cp37-cp37m-win_amd64.whl", hash = "sha256:7e7cdd8a42428cd2716cfe0a506e57168c6a02b8032478209cb4a8a12b8c2c4e"},
+    {file = "ujson-3.1.0-cp38-cp38-macosx_10_14_x86_64.whl", hash = "sha256:a8194b778adf38ad679c62e2bb6cf71972ae91102e611e4bb31f625be6fb366a"},
+    {file = "ujson-3.1.0-cp38-cp38-manylinux1_i686.whl", hash = "sha256:0184ed23618ce3d793aaf9f5b3dd456cf719b930d3936fb39000589ed0bd2811"},
+    {file = "ujson-3.1.0-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:8032ca897cfce113cb9ca7f07ff4c750afe18c605eeed2e09cf9b882c99fc76b"},
+    {file = "ujson-3.1.0-cp38-cp38-win_amd64.whl", hash = "sha256:bf30ac68d8b2aed665589cfd3608e43d8cd6cb74cd5a9379ab9af9861c33a8be"},
+    {file = "ujson-3.1.0.tar.gz", hash = "sha256:00bda1de275ed6fe81817902189c75dfd156b4fa29b44dc1f4620775d2f50cf7"},
 ]
 urllib3 = [
     {file = "urllib3-1.25.9-py2.py3-none-any.whl", hash = "sha256:88206b0eb87e6d677d424843ac5209e3fb9d0190d0ee169599165ec25e9d9115"},
diff --git a/pyproject.toml b/pyproject.toml
index c560ae8..2f89576 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,7 +21,7 @@ misaka = "==1.0.2"
 parguments = "==0.3.2"
 pygments = "==1.6"
 tornado = "==3.2"
-ujson = "==2.0.3"
+ujson = "==3.1.0"
 watchdog = "==0.7.0"
 pyyaml = "^5.3"