diff --git a/src/lib/Hydra/Helper/CatalystUtils.pm b/src/lib/Hydra/Helper/CatalystUtils.pm
index a13f2570..67bfe88e 100644
--- a/src/lib/Hydra/Helper/CatalystUtils.pm
+++ b/src/lib/Hydra/Helper/CatalystUtils.pm
@@ -210,7 +210,7 @@ sub paramToList {
 
 
 # Security checking of filenames.
-Readonly our $pathCompRE    => "(?:[A-Za-z0-9-\+\._\$][A-Za-z0-9-\+\._\$]*)";
+Readonly our $pathCompRE    => "(?:[A-Za-z0-9-\+\._\$][A-Za-z0-9-\+\._\$:]*)";
 Readonly our $relPathRE     => "(?:$pathCompRE(?:/$pathCompRE)*)";
 Readonly our $relNameRE     => "(?:[A-Za-z0-9-_][A-Za-z0-9-\._]*)";
 Readonly our $attrNameRE    => "(?:[A-Za-z_][A-Za-z0-9-_]*)";