diff --git a/o/OVITO/OVITO-3.5.4-GCC-10.2.0-pro.eb b/o/OVITO/OVITO-3.5.4-GCC-10.2.0-pro.eb
index 3037aa86..698d9748 100644
--- a/o/OVITO/OVITO-3.5.4-GCC-10.2.0-pro.eb
+++ b/o/OVITO/OVITO-3.5.4-GCC-10.2.0-pro.eb
@@ -13,7 +13,7 @@ description = """OVITO is a scientific visualization and analysis software for a
 toolchain = {'name': 'GCC', 'version': '10.2.0'} 
 
 #source_urls = ['https://www.ovito.org/download/3106/']
-sources = ['ovito-pro-%(version)s-x86_64.tar.xz']
+sources = ['ovito-pro-%(version)s-dev-HEAD-861f612-x86_64-dev3.5.5.tar.xz']
 
 dependencies = [
     ('X11', '20201008'),
@@ -24,4 +24,8 @@ sanity_check_paths = {
     'dirs': [],
 }
 
+modextravars = {
+    'OVITO_LICENSING_VERBOSE': '1',
+}
+
 moduleclass = 'vis'