diff --git a/packages/opentelemetry-core/src/index.ts b/packages/opentelemetry-core/src/index.ts
index ecdf972421f..57d7cca1388 100644
--- a/packages/opentelemetry-core/src/index.ts
+++ b/packages/opentelemetry-core/src/index.ts
@@ -35,5 +35,6 @@ export * from './trace/sampler/ParentOrElseSampler';
 export * from './trace/sampler/ProbabilitySampler';
 export * from './trace/TraceState';
 export * from './trace/IdGenerator';
+export * from './utils/deep-merge';
 export * from './utils/url';
 export * from './utils/wrap';
diff --git a/packages/opentelemetry-core/src/utils/deep-merge.ts b/packages/opentelemetry-core/src/utils/deep-merge.ts
index 63765418e9a..7a09bcb6bde 100644
--- a/packages/opentelemetry-core/src/utils/deep-merge.ts
+++ b/packages/opentelemetry-core/src/utils/deep-merge.ts
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-function deepMerge(target: Record<string, any>, source: Record<string, any>) {
+export function deepMerge(target: Record<string, any>, source: Record<string, any>) {
   const merged = target;
   for (const prop in source) {
     if (typeof source[prop] === 'object' && source[prop] !== null) {
@@ -24,5 +24,3 @@ function deepMerge(target: Record<string, any>, source: Record<string, any>) {
   }
   return merged;
 }
-
-export default deepMerge;