diff --git a/Makefile b/Makefile
index c13adfa..4f796ef 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-VERSION=2.2
+VERSION := $(shell perl -ne 's/^\# Version: // and print' commit-patch)
 
 all: executable commit-partial commit-patch.1 commit-partial.1 commit-patch.html