diff --git a/.cirrus.yml b/.cirrus.yml
new file mode 100644
index 000000000..3a8c3871c
--- /dev/null
+++ b/.cirrus.yml
@@ -0,0 +1,17 @@
+arm_container:
+  image: gcc:latest
+
+check_task:
+  check_script:
+  - wget https://github.com/Kitware/CMake/releases/download/v3.20.2/cmake-3.20.2.tar.gz
+  - tar xfz cmake-3.20.2.tar.gz
+  - cd cmake-3.20.2
+  - ./configure
+  - make cmake ctest -j10
+  - cd ..
+  - mkdir build
+  - cd build
+  - ../cmake-3.20.2/bin/cmake .. -DJSON_FastTests=ON
+  - make -j10
+  - cd tests
+  - ../../cmake-3.20.2/bin/ctest -j10
diff --git a/README.md b/README.md
index 0e360ef54..38fd58f4f 100644
--- a/README.md
+++ b/README.md
@@ -1140,7 +1140,7 @@ Please note:
 
 - Unsupported versions of GCC and Clang are rejected by `#error` directives. This can be switched off by defining `JSON_SKIP_UNSUPPORTED_COMPILER_CHECK`. Note that you can expect no support in this case.
 
-The following compilers are currently used in continuous integration at [AppVeyor](https://ci.appveyor.com/project/nlohmann/json), [Drone CI](https://cloud.drone.io/nlohmann/json), and [GitHub Actions](https://github.com/nlohmann/json/actions):
+The following compilers are currently used in continuous integration at [AppVeyor](https://ci.appveyor.com/project/nlohmann/json), [Cirrus CI](https://cirrus-ci.com/github/nlohmann/json), and [GitHub Actions](https://github.com/nlohmann/json/actions):
 
 | Compiler                                                                                               | Operating System   | CI Provider    |
 |--------------------------------------------------------------------------------------------------------|--------------------|----------------|
@@ -1190,7 +1190,7 @@ The following compilers are currently used in continuous integration at [AppVeyo
 | GCC 8.5.0                                                                                              | Ubuntu 20.04.3 LTS | GitHub Actions |
 | GCC 9.5.0                                                                                              | Ubuntu 20.04.3 LTS | GitHub Actions |
 | GCC 10.4.0                                                                                             | Ubuntu 20.04.3 LTS | GitHub Actions |
-| GCC 11.1.0                                                                                             | Ubuntu (aarch64)   | Drone CI       |
+| GCC 11.1.0                                                                                             | Ubuntu (aarch64)   | Cirrus CI      |
 | GCC 11.3.0                                                                                             | Ubuntu 20.04.3 LTS | GitHub Actions |
 | GCC 12.2.0                                                                                             | Ubuntu 20.04.3 LTS | GitHub Actions |
 | GCC 13.0.0 20220605 (experimental)                                                                     | Ubuntu 20.04.3 LTS | GitHub Actions |