diff --git a/.ci_support/run_docker_linux.sh b/.ci_support/run_docker_linux.sh
index 13f4925..375fca9 100755
--- a/.ci_support/run_docker_linux.sh
+++ b/.ci_support/run_docker_linux.sh
@@ -5,10 +5,10 @@ set -xe
 cd /tmp
 mkdir build && cd build
 cmake -DCMAKE_INSTALL_PREFIX=~/.local \
-      -DCMAKE_UNITY_BUILD=ON -DCMAKE_UNITY_BUILD_BATCH_SIZE=32 \
+      -DCMAKE_UNITY_BUILD=ON \
       -DCMAKE_CXX_FLAGS="-Wall -Wextra -Wpedantic -Wshadow -Werror -D_GLIBCXX_ASSERTIONS" \
       -DSWIG_COMPILE_FLAGS="-O1 -Wno-unused-parameter -Wno-shadow" \
-      -DSPHINX_FLAGS="-W -T -j4" \
+      -DUSE_SPHINX=ON -DSPHINX_FLAGS="-W -T -j4" \
       /io
 make install
 make tests
diff --git a/.ci_support/run_docker_mingw.sh b/.ci_support/run_docker_mingw.sh
index f743f76..e1c69da 100755
--- a/.ci_support/run_docker_mingw.sh
+++ b/.ci_support/run_docker_mingw.sh
@@ -8,10 +8,10 @@ mkdir build && cd build
 PREFIX=${PWD}/install
 CXXFLAGS="-Wall -Wextra -D_GLIBCXX_ASSERTIONS" ${ARCH}-w64-mingw32-cmake \
   -DCMAKE_INSTALL_PREFIX=${PREFIX} \
+  -DCMAKE_UNITY_BUILD=ON \
   -DPython_INCLUDE_DIR=${MINGW_PREFIX}/include/python${PYMAJMIN} \
   -DPython_LIBRARY=${MINGW_PREFIX}/lib/libpython${PYMAJMIN}.dll.a \
   -DPython_EXECUTABLE=/usr/bin/${ARCH}-w64-mingw32-python${PYMAJMIN}-bin \
-  -DCMAKE_UNITY_BUILD=ON -DCMAKE_UNITY_BUILD_BATCH_SIZE=32 \
   -DBUILD_DOC=OFF \
   /io
 make install
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1c65ae4..041169a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,9 +29,6 @@ endif()
 
 find_package (OpenTURNS CONFIG REQUIRED)
 message (STATUS "Found OpenTURNS: ${OPENTURNS_ROOT_DIR} (found version \"${OPENTURNS_VERSION_STRING}\")")
-if (NOT DEFINED OPENTURNS_PYTHON_MODULE_PATH)
-  set (OPENTURNS_PYTHON_MODULE_PATH ${OPENTURNS_PYTHON3_MODULE_PATH})
-endif ()
 
 find_package (FFTW REQUIRED)
 list (APPEND OTFFTW_INCLUDE_DIRS ${FFTW_INCLUDE_DIRS})
@@ -58,16 +55,14 @@ set (OTFFTW_DATA_PATH ${CMAKE_INSTALL_DATAROOTDIR})
 set (OTFFTW_CONFIG_CMAKE_PATH ${CMAKE_INSTALL_LIBDIR}/cmake/otfftw)
 set (OTFFTW_DOC_PATH ${CMAKE_INSTALL_DOCDIR})
 
-set (CMAKE_CXX_STANDARD 11)
-
 if (BUILD_PYTHON)
   find_package (SWIG 3)
   include (${SWIG_USE_FILE})
 
-  if (CMAKE_VERSION VERSION_LESS 3.24)
-    find_package (Python 3.5 COMPONENTS Interpreter Development)
+  if (CMAKE_VERSION VERSION_LESS 3.28)
+    find_package (Python 3.6 COMPONENTS Interpreter Development)
   else ()
-    find_package (Python 3.5 COMPONENTS Interpreter Development.Module)
+    find_package (Python 3.6 COMPONENTS Interpreter Development.Module Development.SABIModule)
   endif ()
 
   if (Python_FOUND)
@@ -87,14 +82,10 @@ if (BUILD_PYTHON)
       endif ()
     endif ()
 
-    if (DEFINED PYTHON_SITE_PACKAGES)
-      set (OTFFTW_PYTHON_MODULE_PATH "${PYTHON_SITE_PACKAGES}")
+    if (WIN32)
+      set (OTFFTW_PYTHON_MODULE_PATH Lib/site-packages CACHE PATH "site-packages dir")
     else ()
-     if (WIN32)
-       set (OTFFTW_PYTHON_MODULE_PATH Lib/site-packages)
-     else ()
-       set (OTFFTW_PYTHON_MODULE_PATH ${CMAKE_INSTALL_LIBDIR}/python${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}/site-packages)
-      endif ()
+      set (OTFFTW_PYTHON_MODULE_PATH ${CMAKE_INSTALL_LIBDIR}/python${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}/site-packages CACHE PATH "site-packages dir")
     endif ()
   endif ()
 endif ()