diff --git a/package.json b/package.json
index cb2743394c..b7f67da1e7 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "gfm.css": "^1.1.2",
     "jsrsasign": "^10.5.25",
     "katex": "^0.16.0",
-    "matrix-js-sdk": "21.2.0",
+    "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
     "matrix-react-sdk": "3.61.0",
     "matrix-widget-api": "^1.1.1",
     "prop-types": "^15.7.2",
diff --git a/yarn.lock b/yarn.lock
index 7a2cb76d75..e49d6a5535 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8253,6 +8253,23 @@ matrix-js-sdk@21.2.0:
     sdp-transform "^2.14.1"
     unhomoglyph "^1.0.6"
 
+"matrix-js-sdk@github:matrix-org/matrix-js-sdk#develop":
+  version "21.2.0"
+  resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/b318a77ecef179a6fd288cdf32d3ff9c5e8ea989"
+  dependencies:
+    "@babel/runtime" "^7.12.5"
+    "@types/sdp-transform" "^2.4.5"
+    another-json "^0.2.0"
+    bs58 "^5.0.0"
+    content-type "^1.0.4"
+    loglevel "^1.7.1"
+    matrix-events-sdk "0.0.1"
+    matrix-widget-api "^1.0.0"
+    p-retry "4"
+    qs "^6.9.6"
+    sdp-transform "^2.14.1"
+    unhomoglyph "^1.0.6"
+
 matrix-mock-request@^2.5.0:
   version "2.5.0"
   resolved "https://registry.yarnpkg.com/matrix-mock-request/-/matrix-mock-request-2.5.0.tgz#78da2590e82be2e31edcf9814833af5e5f8d2f1a"