diff --git a/.flowconfig b/.flowconfig
index 52287bb3..dfa60b01 100644
--- a/.flowconfig
+++ b/.flowconfig
@@ -10,6 +10,8 @@
 .*/node_modules/oboe/test/.*
 .*/_old/.*
 .*/public/solidity/.*
+.*/build/.*
+.*/build-devel/.*
 
 [libs]
 ./src/flowtype/npm/redux_v3.x.x.js