diff --git a/.drone.yml b/.drone.yml
index c974f22d..22cb032c 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -26,6 +26,7 @@ script:
   docker:
     repo: drone/drone
     tag: [ "0.5.0" ]
+    storage_driver: overlay
     when:
       branch: master
       event: push
diff --git a/.drone.yml.sig b/.drone.yml.sig
index b12aa1f5..22dd735b 100644
--- a/.drone.yml.sig
+++ b/.drone.yml.sig
@@ -1 +1 @@
-eyJhbGciOiJIUzI1NiJ9.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.IPNe-a5DwuYHja-Jq1B399SnDGUpxk52rWlKqAhCBIs
\ No newline at end of file
+eyJhbGciOiJIUzI1NiJ9.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.uNLl4-TpWIkikZ3vsLpGBHXVKdoCg6_daqWIb3dGf0k
\ No newline at end of file