diff --git a/install/fpm/configuration.xml b/install/fpm/configuration.xml
index 6287045182..25749bac9a 100644
--- a/install/fpm/configuration.xml
+++ b/install/fpm/configuration.xml
@@ -588,7 +588,7 @@
         Clear environment in FPM workers.
         Prevents arbitrary environment variables from reaching FPM worker processes
         by clearing the environment in workers before env vars specified in this
-        pool configuration are added. Since PHP 5.4.27.
+        pool configuration are added. Since PHP 5.4.27, 5.5.11, and 5.6.0.
         Default value: Yes.
        </para> 
       </listitem>