diff --git a/lbr/microbuilder.lbr b/lbr/microbuilder.lbr
--- a/lbr/microbuilder.lbr
+++ b/lbr/microbuilder.lbr
@@ -1,12 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE eagle SYSTEM "eagle.dtd">
-<eagle version="7.3.0">
+<eagle version="7.5.0">
 <drawing>
 <settings>
 <setting alwaysvectorfont="no"/>
 <setting verticaltext="up"/>
 </settings>
-<grid distance="0.05" unitdist="inch" unit="inch" style="lines" multiple="1" display="yes" altdistance="0.025" altunitdist="inch" altunit="inch"/>
+<grid distance="0.1" unitdist="inch" unit="inch" style="lines" multiple="1" display="no" altdistance="0.01" altunitdist="inch" altunit="inch"/>
 <layers>
 <layer number="1" name="Top" color="4" fill="1" visible="yes" active="yes"/>
 <layer number="2" name="Route2" color="1" fill="3" visible="no" active="no"/>
@@ -73561,7 +73561,7 @@ body 5x5x1.5mm</description>
 </device>
 </devices>
 </deviceset>
-<deviceset name="3.3V">
+<deviceset name="3.3V" prefix="SUP">
 <description>&lt;b&gt;3.3V Supply&lt;/b&gt;</description>
 <gates>
 <gate name="G$1" symbol="3.3V" x="0" y="0"/>
@@ -73587,7 +73587,7 @@ body 5x5x1.5mm</description>
 </device>
 </devices>
 </deviceset>
-<deviceset name="GND">
+<deviceset name="GND" prefix="SUP">
 <description>&lt;b&gt;GND&lt;/b&gt;</description>
 <gates>
 <gate name="G$1" symbol="GND" x="0" y="0"/>