diff --git a/Formula/magnum-plugins.rb b/Formula/magnum-plugins.rb
index 51a14b5..09ff482 100644
--- a/Formula/magnum-plugins.rb
+++ b/Formula/magnum-plugins.rb
@@ -27,8 +27,9 @@ def install
       system "tar", "xzvf", "basis-universal.tar.gz", "-C", "basis-universal", "--strip-components=1"
     end
 
-    # Bundle meshoptimizer 0.14
-    system "curl", "-L", "https://github.com/zeux/meshoptimizer/archive/v0.14.tar.gz", "-o", "src/external/meshoptimizer.tar.gz"
+    # Bundle meshoptimizer 0.14 + a commit that fixes the build on old Apple
+    # Clang versions: https://github.com/zeux/meshoptimizer/pull/130
+    system "curl", "-L", "https://github.com/zeux/meshoptimizer/archive/97c52415c6d29f297a76482ddde22f739292446d.tar.gz", "-o", "src/external/meshoptimizer.tar.gz"
     cd "src/external" do
       system "mkdir", "meshoptimizer"
       system "tar", "xzvf", "meshoptimizer.tar.gz", "-C", "meshoptimizer", "--strip-components=1"