diff --git a/.watchmanconfig b/.watchmanconfig
new file mode 100644
index 000000000..26bb5527c
--- /dev/null
+++ b/.watchmanconfig
@@ -0,0 +1,13 @@
+{
+  "ignore_dirs": [
+    "build",
+    "apm/node_modules",
+    "node_modules",
+    "src/K2/node_modules",
+    "src/K2/packages/local-sync/node_modules",
+    "src/K2/packages/isomorphic-core/node_modules",
+    "src/K2/packages/cloud-api/node_modules",
+    "src/K2/packages/cloud-workers/node_modules",
+    "src/K2/packages/cloud-core/node_modules"
+  ]
+}