diff -r eff102facb15 -r 14f3795a5ed7 hgext/gpg.py
--- a/hgext/gpg.py	Fri Feb 11 22:24:10 2011 +0800
+++ b/hgext/gpg.py	Fri Dec 24 15:23:01 2010 +0100
@@ -244,7 +244,9 @@
                            "(please commit .hgsigs manually "
                            "or use --force)"))
 
-    repo.wfile(".hgsigs", "ab").write(sigmessage)
+    sigsfile = repo.wfile(".hgsigs", "ab")
+    sigsfile.write(sigmessage)
+    sigsfile.close()
 
     if '.hgsigs' not in repo.dirstate:
         repo[None].add([".hgsigs"])