diff --git a/src/hdf5_hl.d.ts b/src/hdf5_hl.d.ts
index 109b793..22b3852 100644
--- a/src/hdf5_hl.d.ts
+++ b/src/hdf5_hl.d.ts
@@ -1,4 +1,4 @@
-import type { Status, Metadata, H5Module, CompoundMember, CompoundTypeMetadata, EnumTypeMetadata, Filter } from "./hdf5_util_helpers";
+import type { Status, Metadata, H5Module, CompoundMember, CompoundTypeMetadata, EnumTypeMetadata, Filter } from "./hdf5_util_helpers.js";
 export declare var Module: H5Module;
 export declare var FS: (FS.FileSystemType | null);
 declare const ready: Promise<H5Module>;
diff --git a/src/hdf5_hl.ts b/src/hdf5_hl.ts
index e862e7c..4feda52 100644
--- a/src/hdf5_hl.ts
+++ b/src/hdf5_hl.ts
@@ -1,4 +1,4 @@
-import type {Status, Metadata, H5Module, CompoundMember, CompoundTypeMetadata, EnumTypeMetadata, Filter} from "./hdf5_util_helpers";
+import type {Status, Metadata, H5Module, CompoundMember, CompoundTypeMetadata, EnumTypeMetadata, Filter} from "./hdf5_util_helpers.js";
 
 import ModuleFactory from './hdf5_util.js';