Update THANKS.
diff --git a/THANKS b/THANKS
index f345069..556d047 100644
--- a/THANKS
+++ b/THANKS
@@ -8,6 +8,7 @@
   - Arunesh Mathur
   - Jim Meyering
   - Benoit Nadeau
+  - Igor Sakovich
   - Christian Schlichtherle
   - Alyosha Vasilieva