diff --git a/package.json b/package.json
index 624f2d6ecb..5c18d9119e 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": "github:matrix-org/matrix-js-sdk#develop",
+    "matrix-js-sdk": "5.1.0-rc.1",
     "minimist": "^1.2.0",
     "pako": "^1.0.5",
     "png-chunks-extract": "^1.0.0",
diff --git a/yarn.lock b/yarn.lock
index d57ecfbeb9..b01b64a8b3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5791,9 +5791,10 @@ 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@github:matrix-org/matrix-js-sdk#develop":
-  version "5.0.1"
-  resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/a998006842ae558f02819ca84fbaad43685cc10b"
+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"