diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 0fbddfb468b0..277c7d9537bb 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -31,6 +31,7 @@ jobs:
         CCACHE_SLOPPINESS: pch_defines,time_macros,include_file_ctime,include_file_mtime
         #CCACHE_COMPILERCHECK: '%compiler% -dumpversion'
         CCACHE_DEBUG: 1
+        CCACHE_DEBUGLEVEL: 1 # only logs
         CCACHE_LOGFILE: ccache.log
       run: |
         set -eux