diff --git a/apps/ci/mac/ci-compile.sh b/apps/ci/mac/ci-compile.sh
index b8bbf8a67..b49cc413b 100755
--- a/apps/ci/mac/ci-compile.sh
+++ b/apps/ci/mac/ci-compile.sh
@@ -2,7 +2,7 @@
 
 export CCACHE_CPP2=true
 export CCACHE_MAXSIZE='2G'
-export CCACHE_COMPRESS=1
+export CCACHE_COMPRESS=9
 ccache -s
 
 mkdir var/build/obj && cd var/build/obj;