update README
diff --git a/README.md b/README.md
index 85a7b61..1fcc3d9 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@
 
 #### Heron Requirements:
  * Java JDK 1.8
- * Python 2.7
+ * Python 3
  * Bazel 0.26.0
 
 ## Contact
@@ -60,4 +60,4 @@
 
 ## License
 
-Licensed under the Apache License, Version 2.0: http://www.apache.org/licenses/LICENSE-2.0
\ No newline at end of file
+Licensed under the Apache License, Version 2.0: http://www.apache.org/licenses/LICENSE-2.0