diff --git a/packages/grpc-native-core/.npmignore b/packages/grpc-native-core/.npmignore
new file mode 100644
index 00000000..e66c5e92
--- /dev/null
+++ b/packages/grpc-native-core/.npmignore
@@ -0,0 +1 @@
+**/BUILD
\ No newline at end of file
diff --git a/packages/grpc-native-core/package.json b/packages/grpc-native-core/package.json
index 1a6ecde0..4a0c220d 100644
--- a/packages/grpc-native-core/package.json
+++ b/packages/grpc-native-core/package.json
@@ -52,18 +52,18 @@
   "files": [
     "LICENSE",
     "README.md",
-    "deps/grpc/src/proto",
-    "deps/grpc/etc",
+    "deps/grpc/etc/",
     "index.js",
-    "src",
-    "ext",
-    "deps/grpc/include/grpc",
-    "deps/grpc/src/core",
-    "deps/grpc/src/boringssl",
-    "deps/grpc/src/zlib",
-    "deps/grpc/third_party/nanopb",
-    "deps/grpc/third_party/zlib",
-    "deps/grpc/third_party/boringssl",
+    "src/*.js",
+    "ext/*.{cc,h}",
+    "deps/grpc/include/grpc/**/*.h",
+    "deps/grpc/src/core/**/*.{c,h}",
+    "deps/grpc/src/boringssl/*.{c,h}",
+    "deps/grpc/third_party/nanopb/*.{c,h}",
+    "deps/grpc/third_party/zlib/**/*.{c,h}",
+    "deps/grpc/third_party/boringssl/crypto/**/*.{c,h}",
+    "deps/grpc/third_party/boringssl/include/**/*.{c,h}",
+    "deps/grpc/third_party/boringssl/ssl/**/*.{c,h}",
     "binding.gyp"
   ],
   "main": "index.js",
diff --git a/packages/grpc-native-core/templates/package.json.template b/packages/grpc-native-core/templates/package.json.template
index fc188eaa..47efb460 100644
--- a/packages/grpc-native-core/templates/package.json.template
+++ b/packages/grpc-native-core/templates/package.json.template
@@ -54,18 +54,18 @@
     "files": [
       "LICENSE",
       "README.md",
-      "deps/grpc/src/proto",
-      "deps/grpc/etc",
+      "deps/grpc/etc/",
       "index.js",
-      "src",
-      "ext",
-      "deps/grpc/include/grpc",
-      "deps/grpc/src/core",
-      "deps/grpc/src/boringssl",
-      "deps/grpc/src/zlib",
-      "deps/grpc/third_party/nanopb",
-      "deps/grpc/third_party/zlib",
-      "deps/grpc/third_party/boringssl",
+      "src/*.js",
+      "ext/*.{cc,h}",
+      "deps/grpc/include/grpc/**/*.h",
+      "deps/grpc/src/core/**/*.{c,h}",
+      "deps/grpc/src/boringssl/*.{c,h}",
+      "deps/grpc/third_party/nanopb/*.{c,h}",
+      "deps/grpc/third_party/zlib/**/*.{c,h}",
+      "deps/grpc/third_party/boringssl/crypto/**/*.{c,h}",
+      "deps/grpc/third_party/boringssl/include/**/*.{c,h}",
+      "deps/grpc/third_party/boringssl/ssl/**/*.{c,h}",
       "binding.gyp"
     ],
     "main": "index.js",