diff --git a/README.md b/README.md
index a233fd3..cf5f254 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,9 @@
 FreeCAD > v0.16  
 __python > 3 (for python2 use branch py2)__
 
+### Python packages
+scipy
+
 
 ## Supported gear-types
 
diff --git a/metadata.txt b/metadata.txt
new file mode 100644
index 0000000..74b1df9
--- /dev/null
+++ b/metadata.txt
@@ -0,0 +1,4 @@
+[dependencies]
+workbenches=
+pylibs=scipy
+optionalpylibs=
diff --git a/package.xml b/package.xml
index 90136a2..92a6d80 100644
--- a/package.xml
+++ b/package.xml
@@ -19,6 +19,7 @@
       <tag>gear</tag>
       <tag>gears</tag>
     </workbench>
+    <depend>scipy</depend>
   </content>
 
 </package>