diff --git a/stack.xml b/stack.xml
index 59f9a503..803710d2 100644
--- a/stack.xml
+++ b/stack.xml
@@ -24,7 +24,7 @@
   <build_depends>roscpp_core</build_depends>
 
   <depends>PCL</depends>
-  <depends>Eigen</depends>
+  <depends>eigen</depends>
   <depends>geometry</depends>
   <depends>common_msgs</depends>
   <depends>roscpp_core</depends>