diff --git a/BuildFile.xml b/BuildFile.xml
index 315d05fc5878f0790b3251f8f229ac6355f467b9..d9e5531c98b3d2eb2478d2dfc4af25ef50b5ce0c 100644
--- a/BuildFile.xml
+++ b/BuildFile.xml
@@ -7,6 +7,7 @@
 <use   name="classlib"/>
 <use   name="boost"/>
 <use   name="lhapdf"/>
+<use   name="gsl"/>
 <lib   name="openloops"/>
 <use   name="TTH/MEIntegratorStandalone"/>
 <use   name="Python"/>