diff --git a/bindings/matrix-sdk-crypto-js/CHANGELOG.md b/bindings/matrix-sdk-crypto-js/CHANGELOG.md
index 4b09535d0..01aed05e1 100644
--- a/bindings/matrix-sdk-crypto-js/CHANGELOG.md
+++ b/bindings/matrix-sdk-crypto-js/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 -   Extend `OlmDevice.markRequestAsSent` to accept responses to
     `SigningKeysUploadRequest`s.
+-   Add a missing `const` for compatibility with ECMAScript Module compatibility
+    mode.
 -   Fix the body of `SignatureUploadRequest`s to match the spec.
 -   Add a constructor for `SigningKeysUploadRequest`.
 
diff --git a/bindings/matrix-sdk-crypto-js/package.json b/bindings/matrix-sdk-crypto-js/package.json
index 4b1f94a93..023bf0f0d 100644
--- a/bindings/matrix-sdk-crypto-js/package.json
+++ b/bindings/matrix-sdk-crypto-js/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@matrix-org/matrix-sdk-crypto-js",
-    "version": "0.1.0-alpha.8",
+    "version": "0.1.0-alpha.9",
     "homepage": "https://github.com/matrix-org/matrix-rust-sdk",
     "description": "Matrix encryption library, for JavaScript",
     "license": "Apache-2.0",