diff --git a/ortools/python/setup.py.in b/ortools/python/setup.py.in
index 9694b71d7f..c4c521ab6f 100644
--- a/ortools/python/setup.py.in
+++ b/ortools/python/setup.py.in
@@ -100,6 +100,7 @@ setup(
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
+        'Programming Language :: Python :: 3.11',
         'Programming Language :: C++',
         'Programming Language :: Python :: Implementation :: CPython',
         'Topic :: Office/Business :: Scheduling',
diff --git a/tools/docker/Makefile b/tools/docker/Makefile
index 47caaf529f..22cf72ed9b 100644
--- a/tools/docker/Makefile
+++ b/tools/docker/Makefile
@@ -59,6 +59,7 @@ help:
 	@echo -e "\t\t${BOLD}38${RESET} Python3.8"
 	@echo -e "\t\t${BOLD}39${RESET} Python3.9"
 	@echo -e "\t\t${BOLD}310${RESET} Python3.10"
+	@echo -e "\t\t${BOLD}311${RESET} Python3.11"
 	@echo
 	@echo -e "\t${BOLD}<step>${RESET}:"
 	@echo -e "\t\t${BOLD}env${RESET}"
@@ -200,7 +201,7 @@ cache/python: | cache
 	-mkdir $@
 
 ## MANYLINUX ##
-PYTHON_VERSIONS := 36 37 38 39 310
+PYTHON_VERSIONS := 36 37 38 39 310 311
 
 export/python/manylinux: | export/python
 	-mkdir -p $@
diff --git a/tools/release/build_delivery_macos.sh b/tools/release/build_delivery_macos.sh
index 895853408d..451e68ee72 100755
--- a/tools/release/build_delivery_macos.sh
+++ b/tools/release/build_delivery_macos.sh
@@ -200,9 +200,9 @@ function build_python() {
   command -v swig | xargs echo "swig: " | tee -a build.log
 
   if [[ ${PLATFORM} == "arm64" ]]; then
-    local -r PY=(3.8 3.9 3.10)
+    local -r PY=(3.8 3.9 3.10 3.11)
   else
-    local -r PY=(3.6 3.7 3.8 3.9 3.10)
+    local -r PY=(3.6 3.7 3.8 3.9 3.10 3.11)
   fi
 
   for i in "${PY[@]}"; do
diff --git a/tools/release/build_delivery_win.cmd b/tools/release/build_delivery_win.cmd
index f33ac6b70f..b30e602cbf 100644
--- a/tools/release/build_delivery_win.cmd
+++ b/tools/release/build_delivery_win.cmd
@@ -260,7 +260,7 @@ echo %BRANCH% %SHA1%>build_examples.log
 exit /B 0
 
 
-REM PYTHON 3.6, 3.7, 3.8, 3.9, 3.10
+REM PYTHON 3.6, 3.7, 3.8, 3.9, 3.10, 3.11
 :BUILD_PYTHON
 title Build Python
 set HASH=
@@ -270,7 +270,7 @@ echo Python build seems up to date, skipping
 exit /B 0
 )
 
-for %%v in (6 7 8 9 10) do (
+for %%v in (6 7 8 9 10 11) do (
   title Build Python 3.%%v
   :: Check Python
   which.exe C:\python3%%v-64\python.exe || exit 1
@@ -310,7 +310,7 @@ del /s /f /q temp_dotnet
 rmdir /s /q temp_dotnet
 del /s /f /q temp_java
 rmdir /s /q temp_java
-for %%v in (6 7 8 9 10) do (
+for %%v in (6 7 8 9 10 11) do (
   del /s /f /q temp_python3%%v
   rmdir /s /q temp_python3%%v
 )
diff --git a/tools/release/test_delivery_macos.sh b/tools/release/test_delivery_macos.sh
index 0c193006c5..00b35296d7 100755
--- a/tools/release/test_delivery_macos.sh
+++ b/tools/release/test_delivery_macos.sh
@@ -20,7 +20,7 @@ command -v cmake | xargs echo "cmake: " | tee test.log
 command -v make | xargs echo "make: " | tee -a test.log
 command -v swig | xargs echo "swig: " | tee -a test.log
 # python
-PY=(3.6 3.7 3.8 3.9 3.10)
+PY=(3.6 3.7 3.8 3.9 3.10 3.11)
 for i in "${PY[@]}"; do
   command -v "python$i" | xargs echo "python$i: " | tee -a test.log
 done
@@ -50,11 +50,11 @@ for i in "${PY[@]}"; do
 
   set +e
   echo "Testing ortools Python$i..." | tee -a test.log
-  (cd "${VENV_DIR}/bin" && ./python -c "from ortools.linear_solver import pywraplp") 2>&1 | tee -a test.log
-  (cd "${VENV_DIR}/bin" && ./python -c "from ortools.constraint_solver import pywrapcp") 2>&1 | tee -a test.log
-  (cd "${VENV_DIR}/bin" && ./python -c "from ortools.sat import pywrapsat") 2>&1 | tee -a test.log
-  (cd "${VENV_DIR}/bin" && ./python -c "from ortools.graph import pywrapgraph") 2>&1 | tee -a test.log
   (cd "${VENV_DIR}/bin" && ./python -c "from ortools.algorithms import pywrapknapsack_solver") 2>&1 | tee -a test.log
+  (cd "${VENV_DIR}/bin" && ./python -c "from ortools.graph import pywrapgraph") 2>&1 | tee -a test.log
+  (cd "${VENV_DIR}/bin" && ./python -c "from ortools.constraint_solver import pywrapcp") 2>&1 | tee -a test.log
+  (cd "${VENV_DIR}/bin" && ./python -c "from ortools.linear_solver import pywraplp") 2>&1 | tee -a test.log
+  (cd "${VENV_DIR}/bin" && ./python -c "from ortools.sat import pywrapsat") 2>&1 | tee -a test.log
   "${VENV_DIR}/bin/python" "cmake/samples/python/sample.py" 2>&1 | tee -a test.log
   echo "Testing ortools Python$i...DONE" | tee -a test.log
   set -e
diff --git a/tools/release/test_delivery_win.cmd b/tools/release/test_delivery_win.cmd
index 0afd64d25d..86556a1fb1 100755
--- a/tools/release/test_delivery_win.cmd
+++ b/tools/release/test_delivery_win.cmd
@@ -188,3 +188,36 @@ echo Testing ortools Python3.10... | tee.exe -a test.log
 echo Testing ortools Python3.10...DONE | tee.exe -a test.log
 
 FOR %%i IN (%TEMP_DIR%\ortools\dist\*.whl) DO copy %%i .
+
+REM ###################
+REM ##  PYTHON 3.11  ##
+REM ###################
+echo Cleaning Python... | tee.exe -a test.log
+make.exe clean_python WINDOWS_PATH_TO_PYTHON=c:\python311-64
+echo Cleaning Python...DONE | tee.exe -a test.log
+
+REM make.exe python WINDOWS_PATH_TO_PYTHON=c:\python311-64 || exit 1
+REM echo make python3.11: DONE | tee.exe -a build.log
+REM make.exe test_python WINDOWS_PATH_TO_PYTHON=c:\python311-64 || exit 1
+REM echo make test_python3.11: DONE | tee.exe -a build.log
+echo Rebuild Python3.11 pypi archive... | tee.exe -a test.log
+make.exe package_python WINDOWS_PATH_TO_PYTHON=c:\python311-64 || exit 1
+echo Rebuild Python3.11 pypi archive...DONE | tee.exe -a test.log
+
+echo Creating Python3.11 venv... | tee.exe -a test.log
+set PATH=c:\python311-64;c:\python311-64\Scripts;%PATH%
+python -m pip install virtualenv
+set TEMP_DIR=temp_python311
+python -m virtualenv %TEMP_DIR%\venv
+set PATH=%LOCAL_PATH%
+echo Creating Python3.11 venv...DONE | tee.exe -a test.log
+
+echo Installing ortools Python3.11 venv... | tee.exe -a test.log
+FOR %%i IN (%TEMP_DIR%\ortools\dist\*.whl) DO %TEMP_DIR%\venv\Scripts\python -m pip install %%i
+echo Installing ortools Python3.11 venv...DONE | tee.exe -a test.log
+
+echo Testing ortools Python3.11... | tee.exe -a test.log
+%TEMP_DIR%\venv\Scripts\python cmake\samples\python\sample.py 2>&1 | tee.exe -a test.log
+echo Testing ortools Python3.11...DONE | tee.exe -a test.log
+
+FOR %%i IN (%TEMP_DIR%\ortools\dist\*.whl) DO copy %%i .