diff --git a/.drone.jsonnet b/.drone.jsonnet
index 4168eb0..67222a8 100644
--- a/.drone.jsonnet
+++ b/.drone.jsonnet
@@ -21,7 +21,7 @@ local PipelineLinting = {
       },
       commands: [
         'pip install -qq yapf',
-        '[ ! -z "$(find .  -type f -name *.py)" ] && yapf -rd ./',
+        '[ -z "$(find .  -type f -name *.py)" ] || (yapf -rd ./)',
       ],
     },
     {
diff --git a/.drone.yml b/.drone.yml
index 493b6a3..45935ee 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -16,7 +16,7 @@ steps:
   image: python:3.9
   commands:
   - pip install -qq yapf
-  - "[ ! -z \"$(find .  -type f -name *.py)\" ] && yapf -rd ./"
+  - "[ -z \"$(find .  -type f -name *.py)\" ] || (yapf -rd ./)"
   environment:
     PY_COLORS: 1
 
@@ -115,6 +115,6 @@ depends_on:
 
 ---
 kind: signature
-hmac: 1286c5c79a00a9eeef7c492633f842e71e212a481c4929298f3232a72f9ad5f3
+hmac: 906f4ef1461a7a9eb24ef47f142aaed627a59280d53e8b7cf58d1dec241404a2
 
 ...