diff --git a/Pipfile b/Pipfile
index 006ef989..775e0c04 100644
--- a/Pipfile
+++ b/Pipfile
@@ -40,6 +40,7 @@ python-multipart = "==0.0.5"
 motor = ">=2.2.0,<3.0.0"
 tortoise-orm = ">=0.15.18,<0.17.0"
 makefun = ">=1.9.2,<1.10"
+typing-extensions = ">=3.7.4.3"
 
 [requires]
 python_version = "3.7"
diff --git a/Pipfile.lock b/Pipfile.lock
index 4bd7a256..eceec17a 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "4160b03f4656ea829f65e987352cf6abac44d251c30e40aad2440f7fbc38812f"
+            "sha256": "1fde25e5299698252720cbbf5e86bf382aa7d082f3011a06a86b8fc6779f3b4e"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -38,44 +38,42 @@
         },
         "cffi": {
             "hashes": [
-                "sha256:005f2bfe11b6745d726dbb07ace4d53f057de66e336ff92d61b8c7e9c8f4777d",
-                "sha256:09e96138280241bd355cd585148dec04dbbedb4f46128f340d696eaafc82dd7b",
-                "sha256:0b1ad452cc824665ddc682400b62c9e4f5b64736a2ba99110712fdee5f2505c4",
-                "sha256:0ef488305fdce2580c8b2708f22d7785ae222d9825d3094ab073e22e93dfe51f",
-                "sha256:15f351bed09897fbda218e4db5a3d5c06328862f6198d4fb385f3e14e19decb3",
-                "sha256:22399ff4870fb4c7ef19fff6eeb20a8bbf15571913c181c78cb361024d574579",
-                "sha256:23e5d2040367322824605bc29ae8ee9175200b92cb5483ac7d466927a9b3d537",
-                "sha256:2791f68edc5749024b4722500e86303a10d342527e1e3bcac47f35fbd25b764e",
-                "sha256:2f9674623ca39c9ebe38afa3da402e9326c245f0f5ceff0623dccdac15023e05",
-                "sha256:3363e77a6176afb8823b6e06db78c46dbc4c7813b00a41300a4873b6ba63b171",
-                "sha256:33c6cdc071ba5cd6d96769c8969a0531be2d08c2628a0143a10a7dcffa9719ca",
-                "sha256:3b8eaf915ddc0709779889c472e553f0d3e8b7bdf62dab764c8921b09bf94522",
-                "sha256:3cb3e1b9ec43256c4e0f8d2837267a70b0e1ca8c4f456685508ae6106b1f504c",
-                "sha256:3eeeb0405fd145e714f7633a5173318bd88d8bbfc3dd0a5751f8c4f70ae629bc",
-                "sha256:44f60519595eaca110f248e5017363d751b12782a6f2bd6a7041cba275215f5d",
-                "sha256:4d7c26bfc1ea9f92084a1d75e11999e97b62d63128bcc90c3624d07813c52808",
-                "sha256:529c4ed2e10437c205f38f3691a68be66c39197d01062618c55f74294a4a4828",
-                "sha256:6642f15ad963b5092d65aed022d033c77763515fdc07095208f15d3563003869",
-                "sha256:85ba797e1de5b48aa5a8427b6ba62cf69607c18c5d4eb747604b7302f1ec382d",
-                "sha256:8f0f1e499e4000c4c347a124fa6a27d37608ced4fe9f7d45070563b7c4c370c9",
-                "sha256:a624fae282e81ad2e4871bdb767e2c914d0539708c0f078b5b355258293c98b0",
-                "sha256:b0358e6fefc74a16f745afa366acc89f979040e0cbc4eec55ab26ad1f6a9bfbc",
-                "sha256:bbd2f4dfee1079f76943767fce837ade3087b578aeb9f69aec7857d5bf25db15",
-                "sha256:bf39a9e19ce7298f1bd6a9758fa99707e9e5b1ebe5e90f2c3913a47bc548747c",
-                "sha256:c11579638288e53fc94ad60022ff1b67865363e730ee41ad5e6f0a17188b327a",
-                "sha256:c150eaa3dadbb2b5339675b88d4573c1be3cb6f2c33a6c83387e10cc0bf05bd3",
-                "sha256:c53af463f4a40de78c58b8b2710ade243c81cbca641e34debf3396a9640d6ec1",
-                "sha256:cb763ceceae04803adcc4e2d80d611ef201c73da32d8f2722e9d0ab0c7f10768",
-                "sha256:cc75f58cdaf043fe6a7a6c04b3b5a0e694c6a9e24050967747251fb80d7bce0d",
-                "sha256:d80998ed59176e8cba74028762fbd9b9153b9afc71ea118e63bbf5d4d0f9552b",
-                "sha256:de31b5164d44ef4943db155b3e8e17929707cac1e5bd2f363e67a56e3af4af6e",
-                "sha256:e66399cf0fc07de4dce4f588fc25bfe84a6d1285cc544e67987d22663393926d",
-                "sha256:f0620511387790860b249b9241c2f13c3a80e21a73e0b861a2df24e9d6f56730",
-                "sha256:f4eae045e6ab2bb54ca279733fe4eb85f1effda392666308250714e01907f394",
-                "sha256:f92cdecb618e5fa4658aeb97d5eb3d2f47aa94ac6477c6daf0f306c5a3b9e6b1",
-                "sha256:f92f789e4f9241cd262ad7a555ca2c648a98178a953af117ef7fad46aa1d5591"
+                "sha256:00a1ba5e2e95684448de9b89888ccd02c98d512064b4cb987d48f4b40aa0421e",
+                "sha256:00e28066507bfc3fe865a31f325c8391a1ac2916219340f87dfad602c3e48e5d",
+                "sha256:045d792900a75e8b1e1b0ab6787dd733a8190ffcf80e8c8ceb2fb10a29ff238a",
+                "sha256:0638c3ae1a0edfb77c6765d487fee624d2b1ee1bdfeffc1f0b58c64d149e7eec",
+                "sha256:105abaf8a6075dc96c1fe5ae7aae073f4696f2905fde6aeada4c9d2926752362",
+                "sha256:155136b51fd733fa94e1c2ea5211dcd4c8879869008fc811648f16541bf99668",
+                "sha256:1a465cbe98a7fd391d47dce4b8f7e5b921e6cd805ef421d04f5f66ba8f06086c",
+                "sha256:1d2c4994f515e5b485fd6d3a73d05526aa0fcf248eb135996b088d25dfa1865b",
+                "sha256:2c24d61263f511551f740d1a065eb0212db1dbbbbd241db758f5244281590c06",
+                "sha256:51a8b381b16ddd370178a65360ebe15fbc1c71cf6f584613a7ea08bfad946698",
+                "sha256:594234691ac0e9b770aee9fcdb8fa02c22e43e5c619456efd0d6c2bf276f3eb2",
+                "sha256:5cf4be6c304ad0b6602f5c4e90e2f59b47653ac1ed9c662ed379fe48a8f26b0c",
+                "sha256:64081b3f8f6f3c3de6191ec89d7dc6c86a8a43911f7ecb422c60e90c70be41c7",
+                "sha256:6bc25fc545a6b3d57b5f8618e59fc13d3a3a68431e8ca5fd4c13241cd70d0009",
+                "sha256:798caa2a2384b1cbe8a2a139d80734c9db54f9cc155c99d7cc92441a23871c03",
+                "sha256:7c6b1dece89874d9541fc974917b631406233ea0440d0bdfbb8e03bf39a49b3b",
+                "sha256:840793c68105fe031f34d6a086eaea153a0cd5c491cde82a74b420edd0a2b909",
+                "sha256:8d6603078baf4e11edc4168a514c5ce5b3ba6e3e9c374298cb88437957960a53",
+                "sha256:9cc46bc107224ff5b6d04369e7c595acb700c3613ad7bcf2e2012f62ece80c35",
+                "sha256:9f7a31251289b2ab6d4012f6e83e58bc3b96bd151f5b5262467f4bb6b34a7c26",
+                "sha256:9ffb888f19d54a4d4dfd4b3f29bc2c16aa4972f1c2ab9c4ab09b8ab8685b9c2b",
+                "sha256:a7711edca4dcef1a75257b50a2fbfe92a65187c47dab5a0f1b9b332c5919a3fb",
+                "sha256:af5c59122a011049aad5dd87424b8e65a80e4a6477419c0c1015f73fb5ea0293",
+                "sha256:b18e0a9ef57d2b41f5c68beefa32317d286c3d6ac0484efd10d6e07491bb95dd",
+                "sha256:b4e248d1087abf9f4c10f3c398896c87ce82a9856494a7155823eb45a892395d",
+                "sha256:ba4e9e0ae13fc41c6b23299545e5ef73055213e466bd107953e4a013a5ddd7e3",
+                "sha256:c6332685306b6417a91b1ff9fae889b3ba65c2292d64bd9245c093b1b284809d",
+                "sha256:d9efd8b7a3ef378dd61a1e77367f1924375befc2eba06168b6ebfa903a5e59ca",
+                "sha256:df5169c4396adc04f9b0a05f13c074df878b6052430e03f50e68adf3a57aa28d",
+                "sha256:ebb253464a5d0482b191274f1c8bf00e33f7e0b9c66405fbffc61ed2c839c775",
+                "sha256:ec80dc47f54e6e9a78181ce05feb71a0353854cc26999db963695f950b5fb375",
+                "sha256:f032b34669220030f905152045dfa27741ce1a6db3324a5bc0b96b6c7420c87b",
+                "sha256:f60567825f791c6f8a592f3c6e3bd93dd2934e3f9dac189308426bd76b00ef3b",
+                "sha256:f803eaa94c2fcda012c047e62bc7a51b0bdabda1cad7a92a522694ea2d76e49f"
             ],
-            "version": "==1.14.3"
+            "version": "==1.14.4"
         },
         "databases": {
             "hashes": [
@@ -360,6 +358,7 @@
                 "sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c",
                 "sha256:dafc7639cde7f1b6e1acc0f457842a83e722ccca8eef5270af2d74792619a89f"
             ],
+            "index": "pypi",
             "version": "==3.7.4.3"
         }
     },
@@ -593,11 +592,11 @@
         },
         "importlib-metadata": {
             "hashes": [
-                "sha256:77a540690e24b0305878c37ffd421785a6f7e53c8b5720d211b211de8d0e95da",
-                "sha256:cefa1a2f919b866c5beb7c9f7b0ebb4061f30a8a9bf16d609b000e2dfaceb9c3"
+                "sha256:590690d61efdd716ff82c39ca9a9d4209252adfe288a4b5721181050acbd4175",
+                "sha256:d9b8a46a0885337627a6430db287176970fff18ad421becec1d64cfc763c2099"
             ],
             "markers": "python_version < '3.8'",
-            "version": "==2.0.0"
+            "version": "==3.1.0"
         },
         "iniconfig": {
             "hashes": [
@@ -717,11 +716,11 @@
         },
         "mkdocs-material": {
             "hashes": [
-                "sha256:53b2d544e60b2acc2f65c5c55705e881985fd2cf6eccb75d57f0cfa57eafdfab",
-                "sha256:9a902d29046d47f45576ac6ccdc59240b6e5ec38ba6157ca827a11b09bbe927a"
+                "sha256:8b830893b29dc2a80e75c0da934af43c767e8a6f362331ce459d5ad14f4ddd5b",
+                "sha256:91f4fb425dbd19c61c70fd04b20ca5e83361d52aff3ddb3aaae7cb986963c103"
             ],
             "index": "pypi",
-            "version": "==6.1.5"
+            "version": "==6.1.6"
         },
         "mkdocs-material-extensions": {
             "hashes": [
@@ -766,11 +765,11 @@
         },
         "packaging": {
             "hashes": [
-                "sha256:4357f74f47b9c12db93624a82154e9b120fa8293699949152b22065d556079f8",
-                "sha256:998416ba6962ae7fbd6596850b80e17859a5753ba17c32284f67bfff33784181"
+                "sha256:05af3bb85d320377db281cf254ab050e1a7ebcbf5410685a9a407e18a1f81236",
+                "sha256:eb41423378682dadb7166144a4926e443093863024de508ca5c9737d6bc08376"
             ],
             "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==20.4"
+            "version": "==20.7"
         },
         "pathspec": {
             "hashes": [
@@ -1088,11 +1087,11 @@
         },
         "tqdm": {
             "hashes": [
-                "sha256:3d3f1470d26642e88bd3f73353cb6ff4c51ef7d5d7efef763238f4bc1f7e4e81",
-                "sha256:5ff3f5232b19fa4c5531641e480b7fad4598819f708a32eb815e6ea41c5fa313"
+                "sha256:5c0d04e06ccc0da1bd3fa5ae4550effcce42fcad947b4a6cafa77bdc9b09ff22",
+                "sha256:9e7b8ab0ecbdbf0595adadd5f0ebbb9e69010e0bd48bbb0c15e550bf2a5292df"
             ],
             "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==4.53.0"
+            "version": "==4.54.0"
         },
         "typed-ast": {
             "hashes": [
@@ -1135,6 +1134,7 @@
                 "sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c",
                 "sha256:dafc7639cde7f1b6e1acc0f457842a83e722ccca8eef5270af2d74792619a89f"
             ],
+            "index": "pypi",
             "version": "==3.7.4.3"
         },
         "urllib3": {
@@ -1147,11 +1147,11 @@
         },
         "uvicorn": {
             "hashes": [
-                "sha256:8ff7495c74b8286a341526ff9efa3988ebab9a4b2f561c7438c3cb420992d7dd",
-                "sha256:e5dbed4a8a44c7b04376021021d63798d6a7bcfae9c654a0b153577b93854fba"
+                "sha256:562ef6aaa8fa723ab6b82cf9e67a774088179d0ec57cb17e447b15d58b603bcf",
+                "sha256:5836edaf4d278fe67ba0298c0537bdb6398cf359eb644f79e6500ca1aad232b3"
             ],
             "index": "pypi",
-            "version": "==0.12.2"
+            "version": "==0.12.3"
         },
         "zipp": {
             "hashes": [
diff --git a/fastapi_users/user.py b/fastapi_users/user.py
index 716870f8..8bec4a8e 100644
--- a/fastapi_users/user.py
+++ b/fastapi_users/user.py
@@ -2,8 +2,8 @@ from typing import Awaitable, Type
 
 try:
     from typing import Protocol
-except:
-    from typing_extensions import Protocol
+except ImportError:
+    from typing_extensions import Protocol  # type: ignore
 
 from fastapi_users import models
 from fastapi_users.db import BaseUserDatabase
diff --git a/pyproject.toml b/pyproject.toml
index 26e8b120..75968e85 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,6 +28,7 @@ requires = [
     "pyjwt ==1.7.1",
     "python-multipart ==0.0.5",
     "makefun >=1.9.2,<1.10",
+    "typing-extensions >=3.7.4.3; python_version < '3.8'"
 ]
 
 [tool.flit.metadata.requires-extra]