diff --git a/package.json b/package.json
index f0b7e04c73..78bbb5b4c6 100644
--- a/package.json
+++ b/package.json
@@ -80,7 +80,7 @@
     "is-ip": "^2.0.0",
     "linkifyjs": "^2.1.6",
     "lodash": "^4.17.14",
-    "matrix-js-sdk": "4.0.0",
+    "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
     "pako": "^1.0.5",
     "png-chunks-extract": "^1.0.0",
     "prop-types": "^15.5.8",
diff --git a/yarn.lock b/yarn.lock
index 232067a99f..b892ac44f6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5760,10 +5760,9 @@ mathml-tag-names@^2.0.1:
   resolved "https://registry.yarnpkg.com/mathml-tag-names/-/mathml-tag-names-2.1.1.tgz#6dff66c99d55ecf739ca53c492e626f1d12a33cc"
   integrity sha512-pWB896KPGSGkp1XtyzRBftpTzwSOL0Gfk0wLvxt4f2mgzjY19o0LxJ3U25vNWTzsh7da+KTbuXQoQ3lOJZ8WHw==
 
-matrix-js-sdk@4.0.0:
+"matrix-js-sdk@github:matrix-org/matrix-js-sdk#develop":
   version "4.0.0"
-  resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-4.0.0.tgz#c81bdc905af2ab1634527e5f542f2f15977d31cf"
-  integrity sha512-Xbe36xL443qtEBH4xk0k39JabolqZfloK7fwYGMb/PgWO26VOzvw94XWahnIr5w83oxBAF9nFmP+7EnPG6IHnA==
+  resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/21e4c597d9633aef606871cf9ffffaf039142be3"
   dependencies:
     "@babel/runtime" "^7.8.3"
     another-json "^0.2.0"