diff --git a/src/Assetic/Filter/Yui/BaseCompressorFilter.php b/src/Assetic/Filter/Yui/BaseCompressorFilter.php
index <HASH>..<HASH> 100644
--- a/src/Assetic/Filter/Yui/BaseCompressorFilter.php
+++ b/src/Assetic/Filter/Yui/BaseCompressorFilter.php
@@ -80,7 +80,7 @@ abstract class BaseCompressorFilter implements FilterInterface
 
         // input and output files
         $tempDir = realpath(sys_get_temp_dir());
-        $hash = substr(sha1(time().rand(11111, 99999)), 0, 7);
+        $hash = substr(sha1(microtime().rand(11111, 99999)), 0, 7);
         $input = $tempDir.DIRECTORY_SEPARATOR.$hash.'.'.$type;
         $output = $tempDir.DIRECTORY_SEPARATOR.$hash.'-min.'.$type;
         file_put_contents($input, $content);
Ensure uniqueness of temporary files created by the compressor filter. Fixed #<I>