diff --git a/library.properties b/library.properties
index ddab2587..a756c2a7 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=Geometry Suite for Processing
-category=Geometry
+categories=Geometry
 authors=[Michael Carleton](https://github.com/micycle1/)
 url=https://github.com/micycle1/PGS
 sentence=All things computational geometry