diff --git a/ground/gcs/src/libs/osgearth/copydata.pro b/ground/gcs/src/libs/osgearth/copydata.pro
index ef1308520..2c7b10c8b 100644
--- a/ground/gcs/src/libs/osgearth/copydata.pro
+++ b/ground/gcs/src/libs/osgearth/copydata.pro
@@ -2,7 +2,7 @@
 # copy osg and osgearth libraries and data to build dir
 #
 
-OSG_VERSION = 3.5.3
+OSG_VERSION = $$system(osgversion --version-number)
 
 contains(QT_ARCH, x86_64)  {
     LIB_DIR_NAME = lib64