diff --git a/Defs/ResearchProjectDefs/RimWriter_ResearchProjects.xml b/Defs/ResearchProjectDefs/RimWriter_ResearchProjects.xml
index 1cf02fb..6418e60 100644
--- a/Defs/ResearchProjectDefs/RimWriter_ResearchProjects.xml
+++ b/Defs/ResearchProjectDefs/RimWriter_ResearchProjects.xml
@@ -46,7 +46,7 @@ Y
     <label>bookshelves</label>
     <description>Allows your colony to construct shelves for scrolls, journals, and books.</description>
     <baseCost>50</baseCost>
-    <techLevel>Neolithic</techLevel>
+    <techLevel>Medieval</techLevel>
     <prerequisites>
       <li>RimWriter_TechPrimitiveWriting</li>
       <li>ComplexFurniture</li>
@@ -88,4 +88,4 @@ Y
 	<tab>RimWriter_ResearchTab</tab>	
   </ResearchProjectDef>         
 	
-</Defs>
\ No newline at end of file
+</Defs>