diff --git a/tracetools_test/test/test_node.py b/tracetools_test/test/test_node.py
index b1f672d..532c05f 100644
--- a/tracetools_test/test/test_node.py
+++ b/tracetools_test/test/test_node.py
@@ -17,7 +17,7 @@ import unittest
 from tracetools_test.case import TraceTestCase
 
 
-VERSION_REGEX = r'^[0-9]\.[0-9]\.[0-9]$'
+VERSION_REGEX = r'^[0-9]+\.[0-9]+\.[0-9]+$'
 
 
 class TestNode(TraceTestCase):