diff --git a/package.json b/package.json
index 8daf2fa..e0bbb7d 100644
--- a/package.json
+++ b/package.json
@@ -94,6 +94,7 @@
     "src/core/security/security_context.h",
     "src/core/tsi/fake_transport_security.h",
     "src/core/tsi/ssl_transport_security.h",
+    "src/core/tsi/ssl_types.h",
     "src/core/tsi/transport_security.h",
     "src/core/tsi/transport_security_interface.h",
     "src/core/census/grpc_filter.h",