diff --git a/testdata/testfile b/testdata/testfile
index 2e9cf8e..d1c1b4c 100644
--- a/testdata/testfile
+++ b/testdata/testfile
@@ -33,7 +33,7 @@ The above version should be updated to the latest version with this action.
 
 Other test cases.
 
-REDPEN_VERSION=1.10.1
+REDPEN_VERSION=1.10.4
 
 TMUX_VERSION=3.0