diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index 8869bec..d8b4094 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -505,6 +505,7 @@
                       'src/core/lib/slice/percent_encoding.c',
                       'src/core/lib/slice/slice.c',
                       'src/core/lib/slice/slice_buffer.c',
+                      'src/core/lib/slice/slice_intern.c',
                       'src/core/lib/slice/slice_string_helpers.c',
                       'src/core/lib/surface/alarm.c',
                       'src/core/lib/surface/api_trace.c',