diff --git a/package.json b/package.json
index b80ff39b36..6405b1f14b 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "gfm.css": "^1.1.2",
     "highlight.js": "^9.13.1",
     "jsrsasign": "^9.1.5",
-    "matrix-js-sdk": "8.5.0",
+    "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
     "matrix-react-sdk": "3.6.0",
     "matrix-widget-api": "^0.1.0-beta.2",
     "olm": "https://packages.matrix.org/npm/olm/olm-3.2.1.tgz",
diff --git a/yarn.lock b/yarn.lock
index 08dff37951..d0b3b7b937 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7913,6 +7913,20 @@ matrix-js-sdk@8.5.0:
     request "^2.88.2"
     unhomoglyph "^1.0.6"
 
+"matrix-js-sdk@github:matrix-org/matrix-js-sdk#develop":
+  version "8.5.0"
+  resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/d8c4101fdd521e189f4755c6f02a8971b991ef5f"
+  dependencies:
+    "@babel/runtime" "^7.11.2"
+    another-json "^0.2.0"
+    browser-request "^0.3.3"
+    bs58 "^4.0.1"
+    content-type "^1.0.4"
+    loglevel "^1.7.0"
+    qs "^6.9.4"
+    request "^2.88.2"
+    unhomoglyph "^1.0.6"
+
 matrix-mock-request@^1.2.3:
   version "1.2.3"
   resolved "https://registry.yarnpkg.com/matrix-mock-request/-/matrix-mock-request-1.2.3.tgz#56b15d86e2601a9b48a854844396d18caab649c8"