diff --git a/src/etc/snapshot.py b/src/etc/snapshot.py
index 3eda5a97eb6d..608dbdcca5d2 100644
--- a/src/etc/snapshot.py
+++ b/src/etc/snapshot.py
@@ -34,7 +34,7 @@ snapshot_files = {
               "lib/librustllvm.so"],
     "macos": ["bin/rustc",
               "lib/libstd-*.dylib",
-              "lib/libcore-*.dylib",
+              "lib/libextra-*.dylib",
               "lib/librustc-*.dylib",
               "lib/libsyntax-*.dylib",
               "lib/librustrt.dylib",