add 3.1.2
diff --git a/LICENSE b/LICENSE
index 2e97143..0d33662 100644
--- a/LICENSE
+++ b/LICENSE
@@ -67,6 +67,7 @@
     3.0.1           3.0         2009        PSF         yes
     3.1             3.0.1       2009        PSF         yes
     3.1.1           3.1         2009        PSF         yes
+    3.1.2           3.1         2010        PSF         yes
 
 Footnotes: