diff --git a/fsl/version.py b/fsl/version.py
index a7b2e3d5a7dec6d92d74668c1929dba1071dc314..747748614603fc65b1590d6f8102b19e71b6821d 100644
--- a/fsl/version.py
+++ b/fsl/version.py
@@ -60,7 +60,7 @@ def parseVersionString(versionString):
     # number will end with '.dev', but
     # we ignore this for the purposes of
     # comparison.
-    if len(components) == 4 and components[3] == 'dev':
+    if len(components) == 4 and components[3].startswith('dev'):
         components = components[:3]
 
     # Major, minor, and point