diff --git a/packages/smithy-client/src/index.ts b/packages/smithy-client/src/index.ts
index 996345fec3e..ee08d54c3c5 100644
--- a/packages/smithy-client/src/index.ts
+++ b/packages/smithy-client/src/index.ts
@@ -1,4 +1,4 @@
-export * from "./NoOpLogger";
+export type { DocumentType, SdkError, SmithyException } from "@smithy/types";
 export * from "./client";
 export * from "./collect-stream-body";
 export * from "./command";
@@ -8,16 +8,17 @@ export * from "./date-utils";
 export * from "./default-error-handler";
 export * from "./defaults-mode";
 export * from "./emitWarningIfUnsupportedVersion";
-export * from "./extensions";
 export * from "./exceptions";
 export * from "./extended-encode-uri-component";
+export * from "./extensions";
 export * from "./get-array-if-single-item";
 export * from "./get-value-from-text-node";
+export * from "./is-serializable-header-value";
 export * from "./lazy-json";
+export * from "./NoOpLogger";
 export * from "./object-mapping";
 export * from "./parse-utils";
 export * from "./resolve-path";
 export * from "./ser-utils";
 export * from "./serde-json";
 export * from "./split-every";
-export type { DocumentType, SdkError, SmithyException } from "@smithy/types";