diff --git a/src/encoder.spec.ts b/src/codec.spec.ts
similarity index 95%
rename from src/encoder.spec.ts
rename to src/codec.spec.ts
index a458a74..5cf2544 100644
--- a/src/encoder.spec.ts
+++ b/src/codec.spec.ts
@@ -5,7 +5,7 @@ import {
   MessageV0,
 } from "js-waku/lib/waku_message/version_0";
 
-import { RLNDecoder, RLNEncoder } from "./encoder.js";
+import { RLNDecoder, RLNEncoder } from "./codec.js";
 
 import * as rln from "./index.js";
 
diff --git a/src/encoder.ts b/src/codec.ts
similarity index 100%
rename from src/encoder.ts
rename to src/codec.ts
diff --git a/src/index.ts b/src/index.ts
index 22eadb9..77fa214 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,4 +1,4 @@
-import { RLNDecoder, RLNEncoder } from "./encoder.js";
+import { RLNDecoder, RLNEncoder } from "./codec.js";
 import type { Proof, RLNInstance } from "./rln.js";
 import { MembershipKey } from "./rln.js";