diff --git a/tests/SqlFormatterTest.php b/tests/SqlFormatterTest.php
index 466fe74..f6395e4 100644
--- a/tests/SqlFormatterTest.php
+++ b/tests/SqlFormatterTest.php
@@ -131,19 +131,19 @@ public static function formatHighlightData(): Generator
     /** @return Generator<mixed[]> */
     public static function highlightCliData(): Generator
     {
-        return self::fileDataProvider('clihighlight.html');
+        return self::fileDataProvider('clihighlight.txt');
     }
 
     /** @return Generator<mixed[]> */
     public static function formatData(): Generator
     {
-        return self::fileDataProvider('format.html');
+        return self::fileDataProvider('format.txt');
     }
 
     /** @return Generator<mixed[]> */
     public static function compressData(): Generator
     {
-        return self::fileDataProvider('compress.html');
+        return self::fileDataProvider('compress.txt');
     }
 
     /** @return Generator<mixed[]> */
diff --git a/tests/clihighlight.html b/tests/clihighlight.txt
old mode 100755
new mode 100644
similarity index 100%
rename from tests/clihighlight.html
rename to tests/clihighlight.txt
diff --git a/tests/compress.html b/tests/compress.txt
old mode 100755
new mode 100644
similarity index 100%
rename from tests/compress.html
rename to tests/compress.txt
diff --git a/tests/format-highlight.html b/tests/format-highlight.html
old mode 100755
new mode 100644
diff --git a/tests/format.html b/tests/format.txt
old mode 100755
new mode 100644
similarity index 100%
rename from tests/format.html
rename to tests/format.txt
diff --git a/tests/highlight.html b/tests/highlight.html
old mode 100755
new mode 100644
diff --git a/tests/sql.sql b/tests/sql.sql
old mode 100755
new mode 100644