diff --git a/x/XCrySDen/XCrySDen-1.5.60-intel-2017a.eb b/x/XCrySDen/XCrySDen-1.5.60-intel-2017a.eb
index 4b892e8e..2728b6c8 100644
--- a/x/XCrySDen/XCrySDen-1.5.60-intel-2017a.eb
+++ b/x/XCrySDen/XCrySDen-1.5.60-intel-2017a.eb
@@ -20,6 +20,7 @@ dependencies = [
     ('Tcl', '8.5.19', '', True),
     ('Tk', '8.5.19', '', True),
     ('Mesa', '18.3.1', '', True),
+    ('libGLU', '9.0.0', '', True),
 ]
 
 osdependencies = ['libXmu-devel']