diff --git a/src/Compilers/Server/VBCSCompiler/MetadataCache.cs b/src/Compilers/Server/VBCSCompiler/MetadataCache.cs
index 7fd960ff2f81c57d0ae3d990c39f7b456459e01f..c32cb9c81b65827a7f26ad656ba8e773797464bc 100644
--- a/src/Compilers/Server/VBCSCompiler/MetadataCache.cs
+++ b/src/Compilers/Server/VBCSCompiler/MetadataCache.cs
@@ -15,8 +15,8 @@ namespace Microsoft.CodeAnalysis.CompilerServer
 {
     internal class MetadataAndSymbolCache
     {
-        // Store 100 entries -- arbitrary number
-        private const int CacheSize = 100;
+        // Store 500 entries -- Out of ~8.7M projects, only about 4,000 had more than 500 references
+        private const int CacheSize = 500;
         private readonly ConcurrentLruCache<FileKey, Metadata> _metadataCache =
             new ConcurrentLruCache<FileKey, Metadata>(CacheSize);