diff --git a/api/include/opentelemetry/context/runtime_context.h b/api/include/opentelemetry/context/runtime_context.h
index d648362cee..5cb793b23a 100644
--- a/api/include/opentelemetry/context/runtime_context.h
+++ b/api/include/opentelemetry/context/runtime_context.h
@@ -294,7 +294,8 @@ class ThreadLocalContextStorage : public RuntimeContextStorage
         }
         delete[] base_;
       }
-      base_ = temp;
+      base_     = temp;
+      capacity_ = new_capacity;
     }
 
     ~Stack() noexcept { delete[] base_; }