diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index de2453a..c825b7b 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -8,13 +8,12 @@ on:
 
 jobs:
   test:
-    runs-on: ${{ matrix.os || 'ubuntu-latest' }}
+    runs-on: "ubuntu-latest"
     strategy:
       matrix:
         include:
-          - python: "3.6"
-            env: py36-fastapi68
-            os: ubuntu-20.04  # 3.6 is not available on ubuntu-20.04
+          - python: "3.7"
+            env: py37-fastapi68
           - python: "3.8"
             env: py38-fastapi68
           - python: "3.10"
diff --git a/build.sh b/build.sh
index b8d3a87..8e7b34c 100644
--- a/build.sh
+++ b/build.sh
@@ -1,7 +1,6 @@
 #!/bin/bash
 
-# last version of `build` supporting Python 3.6
-pip install build==0.9.0
+pip install build
 
 # build the wheel and install it
 WHEEL_NAME=$(python -m build | grep -Po "fastapi_oauth2-.*\.whl" | tail -n 1)
diff --git a/requirements.txt b/requirements.txt
index dd5f611..a388b0a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 fastapi>=0.68.1
-httpx>=0.22.0
+httpx>=0.23.0
 oauthlib>=3.2.2
 python-jose>=3.3.0
 social-auth-core>=4.4.2
diff --git a/setup.cfg b/setup.cfg
index ac5fc78..ed46db8 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -31,11 +31,11 @@ classifiers =
     Framework :: FastAPI
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
+    Programming Language :: Python :: 3.11
     License :: OSI Approved :: MIT License
 
 [options]
@@ -43,13 +43,13 @@ packages =
     fastapi_oauth2
 install_requires =
     fastapi>=0.68.1
-    httpx>=0.22.0
+    httpx>=0.23.0
     oauthlib>=3.2.2
     python-jose>=3.3.0
     social-auth-core>=4.4.2
     starlette>=0.19.1
 include_package_data = yes
-python_requires = >=3.6
+python_requires = >=3.7
 package_dir =
     =src
 zip_safe = no
\ No newline at end of file
diff --git a/tests/requirements.txt b/tests/requirements.txt
index b687b13..57e15b9 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,5 +1,5 @@
 tox==3.24.3
 trio>=0.19.0
 pytest==6.2.5
-httpx==0.22.0
+httpx==0.23.0
 appengine-python-standard  # for loading the gae backend
diff --git a/tox.ini b/tox.ini
index 7edde4a..0ed3616 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{36,38,310,311}-fastapi68
+    py{37,38,310,311}-fastapi68
     py{37,39,310,311}-fastapi{84,100}
 
 [testenv]