diff --git a/.drone.jsonnet b/.drone.jsonnet
index c3035e5..c7f58f9 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 d9dcb26..7e522e5 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
 
@@ -180,6 +180,6 @@ depends_on:
 
 ---
 kind: signature
-hmac: 93b1b349fc14d703509b591ad5949400af0e575ea7a2f3179bc1f97e6b6b6088
+hmac: 7e013957bf35d6094663f7a823570768e08653c5c6776c4432eb12c5987a8dea
 
 ...