diff --git a/emsdk_manifest.json b/emsdk_manifest.json
index d162c45..7cb7f8d 100644
--- a/emsdk_manifest.json
+++ b/emsdk_manifest.json
@@ -575,6 +575,18 @@
     "uses": ["llvm-git-master-64bit", "node-12.9.1-64bit", "python-2.7.13.1-64bit", "emscripten-incoming-64bit"],
     "os": "win"
   },
+  {
+    "version": "upstream-incoming",
+    "bitness": 64,
+    "uses": ["llvm-git-master-64bit", "node-12.9.1-64bit", "emscripten-incoming-64bit"],
+    "os": "osx"
+  },
+  {
+    "version": "upstream-incoming",
+    "bitness": 64,
+    "uses": ["llvm-git-master-64bit", "node-12.9.1-64bit", "emscripten-incoming-64bit"],
+    "os": "linux"
+  },
   {
     "version": "fastcomp-incoming",
     "bitness": 32,