diff --git a/package.json b/package.json
index e008efd8c0..2b34a21ee7 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "gemini-scrollbar": "github:matrix-org/gemini-scrollbar#91e1e566",
     "gfm.css": "^1.1.2",
     "highlight.js": "^9.13.1",
-    "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
+    "matrix-js-sdk": "5.1.0-rc.1",
     "matrix-react-sdk": "github:matrix-org/matrix-react-sdk#develop",
     "olm": "https://packages.matrix.org/npm/olm/olm-3.1.4.tgz",
     "postcss-easings": "^2.0.0",
diff --git a/yarn.lock b/yarn.lock
index e9948b8f87..ee9b60abc6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7595,6 +7595,21 @@ mathml-tag-names@^2.1.1:
   resolved "https://registry.yarnpkg.com/mathml-tag-names/-/mathml-tag-names-2.1.1.tgz#6dff66c99d55ecf739ca53c492e626f1d12a33cc"
   integrity sha512-pWB896KPGSGkp1XtyzRBftpTzwSOL0Gfk0wLvxt4f2mgzjY19o0LxJ3U25vNWTzsh7da+KTbuXQoQ3lOJZ8WHw==
 
+matrix-js-sdk@5.1.0-rc.1:
+  version "5.1.0-rc.1"
+  resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-5.1.0-rc.1.tgz#48154133f1c8bc19557164a24535d6d45d1cf482"
+  integrity sha512-3pf8NOziyaldtJkYsas9Cq/b8TloGMY89KRA4tJLRDCdMrlBEJoQ4qb9MCmhS53Yb8N4ysI7qUUC21FtBryAVQ==
+  dependencies:
+    "@babel/runtime" "^7.8.3"
+    another-json "^0.2.0"
+    browser-request "^0.3.3"
+    bs58 "^4.0.1"
+    content-type "^1.0.2"
+    loglevel "^1.6.4"
+    qs "^6.5.2"
+    request "^2.88.0"
+    unhomoglyph "^1.0.2"
+
 "matrix-js-sdk@github:matrix-org/matrix-js-sdk#develop":
   version "5.0.1"
   resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/a998006842ae558f02819ca84fbaad43685cc10b"