CHANGELOG.md in rspeed-0.5.0 vs CHANGELOG.md in rspeed-0.5.1

@@ -1,8 +1,14 @@
 ## master
 
 - None;
 
+## v0.5.1
+
+#### Fix
+
+- Only pipe number 1 will warm up avoiding duplicated spec entries;
+
 ## v0.5.0
 
 #### Fix
 
 - Add env `RSPEED_NAME` to specify the application name and avoid result conflicts between multiple runs;