diff --git a/src/harnessmaker.py b/src/harnessmaker.py
index 1e44250..c8c1a19 100644
--- a/src/harnessmaker.py
+++ b/src/harnessmaker.py
@@ -444,7 +444,7 @@ def main():
     baseIndent = "    "
 
     if "-v" in sys.argv or "--version" in sys.argv:
-        print("TSTL, version 1.2.20")
+        print("TSTL, version 1.2.21")
         print("Documentation at https://github.com/agroce/tstl")
         sys.exit(0)