diff --git a/src/cambridge_base.make b/src/cambridge_base.make
index 9a46ff996899f34393ed11beb2fbd54aa8007bee..569141beec5f1ecb90e36a77fe19de3fdd614512 100644
--- a/src/cambridge_base.make
+++ b/src/cambridge_base.make
@@ -13,7 +13,7 @@ projects[cambridge_theme][subdir] = ""
 
 ; contrib
 
-projects[ctools] = "1.5"
+projects[ctools] = "1.6"
 projects[features][version] = "2.3"
 projects[features][subdir] = "contrib"
 projects[imagecrop][version] = "1.0-rc3"