diff --git a/lib/ontosim/version.txt b/lib/ontosim/version.txt
index a1d44d5264999e5f4051b60c5e472f1fbafa4039..cd5ac039d67e0bdadb17976e4ac39f0ffe6bb6e4 100644
--- a/lib/ontosim/version.txt
+++ b/lib/ontosim/version.txt
@@ -1 +1 @@
-??
+2.0