diff --git a/.github/external_ci/.drone.yml b/.github/external_ci/.drone.yml
deleted file mode 100644
index 0d9e3d0be..000000000
--- a/.github/external_ci/.drone.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-kind: pipeline
-name: test-on-arm64
-
-platform:
-  arch: arm64
-
-steps:
-- name: build
-  image: gcc
-  commands:
-  - 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