diff --git a/.github/workflows/pr.yaml b/.github/workflows/pr.yaml
deleted file mode 100644
index 90aa573..0000000
--- a/.github/workflows/pr.yaml
+++ /dev/null
@@ -1,62 +0,0 @@
-name: PR
-on:
-  pull_request:
-    branches: [ main ]
-  push:
-    branches: [ main ]
-jobs:
-  pr:
-    name: PR
-    runs-on: self-hosted
-    steps:
-    - name: Clone
-      uses: actions/checkout@v2
-
-    - name: Build
-      uses: docker://nixos/nix
-      with:
-        args: >
-          bash -ec "
-            nix \
-            --extra-experimental-features flakes \
-            --extra-experimental-features nix-command \
-            --extra-substituters 'http://172.17.0.1:5000?priority=1&trusted=1' \
-            --extra-substituters 'https://alejandra.cachix.org?priority=100&trusted=1' \
-            build \
-            --print-build-logs
-          "
-
-    - name: Check
-      uses: docker://nixos/nix
-      with:
-        args: >
-          bash -ec "
-            nix \
-            --extra-experimental-features flakes \
-            --extra-experimental-features nix-command \
-            --extra-substituters 'http://172.17.0.1:5000?priority=1&trusted=1' \
-            --extra-substituters 'https://alejandra.cachix.org?priority=100&trusted=1' \
-            flake \
-            check \
-            --print-build-logs
-          "
-
-    # ERROR cargo_tarpaulin: Failed to run tests: ASLR disable failed: EPERM: Operation not permitted
-    # - name: Test
-    #   uses: docker://nixos/nix
-    #   with:
-    #     args: >
-    #       bash -ec "
-    #         source <( \
-    #           nix \
-    #           --extra-experimental-features flakes \
-    #           --extra-experimental-features nix-command \
-    #           --extra-substituters 'http://172.17.0.1:5000?priority=1&trusted=1'
-    #           --extra-substituters 'https://alejandra.cachix.org?priority=100&trusted=1'
-    #           print-dev-env \
-    #           --no-update-lock-file \
-    #           --no-write-lock-file \
-    #         )
-
-    #         cargo tarpaulin
-    #       "
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
deleted file mode 100644
index 1e35c04..0000000
--- a/.github/workflows/release.yaml
+++ /dev/null
@@ -1,40 +0,0 @@
-name: Release
-on:
-  push:
-    branches: [ main ]
-jobs:
-  release:
-    env:
-      CACHIX_AUTH_TOKEN: ${{ secrets.CACHIX_AUTH_TOKEN }}
-    name: Release
-    runs-on: self-hosted
-    steps:
-    - name: Clone
-      uses: actions/checkout@v2
-
-    - name: Build and Release
-      uses: docker://nixos/nix
-      with:
-        args: >
-          bash -ec "
-            nix \
-            --extra-experimental-features flakes \
-            --extra-experimental-features nix-command \
-            --extra-substituters 'http://172.17.0.1:5000?priority=1&trusted=1' \
-            --extra-substituters 'https://alejandra.cachix.org?priority=100&trusted=1' \
-            build \
-            --print-build-logs
-
-            nix \
-            --extra-experimental-features flakes \
-            --extra-experimental-features nix-command \
-            --extra-substituters 'http://172.17.0.1:5000?priority=1&trusted=1' \
-            --extra-substituters 'https://alejandra.cachix.org?priority=100&trusted=1' \
-            develop \
-            --profile \
-            develop
-
-            nix-env -iA cachix -f https://cachix.org/api/v1/install
-
-            cachix push --compression-level 9 alejandra develop result
-          "
diff --git a/buildkite.yaml b/buildkite.yaml
new file mode 100644
index 0000000..40a0191
--- /dev/null
+++ b/buildkite.yaml
@@ -0,0 +1,4 @@
+steps:
+- label: test
+  command:
+  - nix3 flake check