diff --git a/package.json b/package.json
index 711388d777..a30525aad7 100644
--- a/package.json
+++ b/package.json
@@ -73,8 +73,8 @@
     "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-react-sdk": "github:matrix-org/matrix-react-sdk#develop",
+    "matrix-js-sdk": "2.4.6-rc.1",
+    "matrix-react-sdk": "1.7.5-rc.1",
     "modernizr": "^3.6.0",
     "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 74b9ea555c..9bb14c8f67 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6009,9 +6009,10 @@ math-random@^1.0.1:
   resolved "https://registry.yarnpkg.com/math-random/-/math-random-1.0.4.tgz#5dd6943c938548267016d4e34f057583080c514c"
   integrity sha512-rUxjysqif/BZQH2yhd5Aaq7vXMSx9NdEsQcyA07uEzIvxgI7zIr33gGsh+RU0/XjmQpCW7RsVof1vlkvQVCK5A==
 
-"matrix-js-sdk@github:matrix-org/matrix-js-sdk#develop":
-  version "2.4.5"
-  resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/6ea8003df23d55e2b84911c3204005c42a9ffa9c"
+matrix-js-sdk@2.4.6-rc.1:
+  version "2.4.6-rc.1"
+  resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-2.4.6-rc.1.tgz#27524e3db8444f0c879aa1c532e7c8d02f31de60"
+  integrity sha512-0L37WWq0qqJKGt93/lS29dgKcVGZ6b7thbbcv1/5vXPfvr3BaLL3Hce/krMQfToWktaNCUvi0bzUshyRY3VWqQ==
   dependencies:
     another-json "^0.2.0"
     babel-runtime "^6.26.0"
@@ -6032,9 +6033,10 @@ matrix-mock-request@^1.2.3:
     bluebird "^3.5.0"
     expect "^1.20.2"
 
-"matrix-react-sdk@github:matrix-org/matrix-react-sdk#develop":
-  version "1.7.4"
-  resolved "https://codeload.github.com/matrix-org/matrix-react-sdk/tar.gz/54d6b6aa73656d9c00cc047ace964bc73ce011e7"
+matrix-react-sdk@1.7.5-rc.1:
+  version "1.7.5-rc.1"
+  resolved "https://registry.yarnpkg.com/matrix-react-sdk/-/matrix-react-sdk-1.7.5-rc.1.tgz#53669e830e88cd39817b23e53d0c1cb8dbc39e42"
+  integrity sha512-SleiL6evFZemQxb7kIjPnC4FEKYjSvYMFhQEMgBQ7EJCi2pZbRNLDYaMcumu2ReGqyg4ueaZqoGm2Asdzoo6rw==
   dependencies:
     babel-plugin-syntax-dynamic-import "^6.18.0"
     babel-runtime "^6.26.0"
@@ -6066,7 +6068,7 @@ matrix-mock-request@^1.2.3:
     linkifyjs "^2.1.6"
     lodash "^4.17.14"
     lolex "4.2"
-    matrix-js-sdk "github:matrix-org/matrix-js-sdk#develop"
+    matrix-js-sdk "2.4.6-rc.1"
     optimist "^0.6.1"
     pako "^1.0.5"
     png-chunks-extract "^1.0.0"