diff --git a/.github/workflows/osx.yml b/.github/workflows/osx.yml
index 118d4fd..54068cb 100644
--- a/.github/workflows/osx.yml
+++ b/.github/workflows/osx.yml
@@ -18,7 +18,6 @@ jobs:
       fail-fast: false
       matrix:
         os:
-        - 13
         - 14
         - 15
 
diff --git a/README.md b/README.md
index fbe1946..da8ab69 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 # ![xtensor-python](docs/source/xtensor-python.svg)
 
-[![GHA Linux](https://github.com/xtensor-stack/xtensor/actions/workflows/linux.yml/badge.svg)](https://github.com/xtensor-stack/xtensor/actions/workflows/linux.yml)
-[![GHA OSX](https://github.com/xtensor-stack/xtensor/actions/workflows/osx.yml/badge.svg)](https://github.com/xtensor-stack/xtensor/actions/workflows/osx.yml)
-[![GHA Windows](https://github.com/xtensor-stack/xtensor/actions/workflows/windows.yml/badge.svg)](https://github.com/xtensor-stack/xtensor/actions/workflows/windows.yml)
+[![GHA Linux](https://github.com/xtensor-stack/xtensor-python/actions/workflows/linux.yml/badge.svg)](https://github.com/xtensor-stack/xtensor-python/actions/workflows/linux.yml)
+[![GHA OSX](https://github.com/xtensor-stack/xtensor-python/actions/workflows/osx.yml/badge.svg)](https://github.com/xtensor-stack/xtensor-python/actions/workflows/osx.yml)
+[![GHA Windows](https://github.com/xtensor-stack/xtensor-python/actions/workflows/windows.yml/badge.svg)](https://github.com/xtensor-stack/xtensor-python/actions/workflows/windows.yml)
 [![Documentation](http://readthedocs.org/projects/xtensor-python/badge/?version=latest)](https://xtensor-python.readthedocs.io/en/latest/?badge=latest)
 [![Zulip](https://img.shields.io/badge/social_chat-zulip-blue.svg)](https://xtensor.zulipchat.com/#narrow/channel/539553-Ask-anything)
 
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 60fcf10..fb31c6e 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -29,7 +29,7 @@ include(CheckCXXCompilerFlag)
 
 string(TOUPPER "${CMAKE_BUILD_TYPE}" U_CMAKE_BUILD_TYPE)
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++20")
 
 if(MSVC)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHsc /MP /bigobj")