diff --git a/package.json b/package.json
index 84f18a80..c5fade13 100644
--- a/package.json
+++ b/package.json
@@ -74,8 +74,8 @@
     "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": "2.4.3-rc.1",
+    "matrix-react-sdk": "1.7.1-rc.1",
     "modernizr": "^3.6.0",
     "olm": "https://packages.matrix.org/npm/olm/olm-3.1.4.tgz",
     "prop-types": "^15.7.2",
diff --git a/yarn.lock b/yarn.lock
index 9b520a5b..c4b2745c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5950,9 +5950,10 @@ 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 "2.4.2"
-  resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/46d7e4c7075386f1330d6a49941e9979fc26be0a"
+matrix-js-sdk@2.4.3-rc.1:
+  version "2.4.3-rc.1"
+  resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-2.4.3-rc.1.tgz#c06452b89c74976ac0bae0732325c0b359e6f2fa"
+  integrity sha512-aV70H10lSpjAOmnWDXIWc2CP5D1OylwSSfyc61QzjvGhECEYaiQi4rxH4ZFhX9AL3ezPHse7SY6AmKOCfqBQiw==
   dependencies:
     another-json "^0.2.0"
     babel-runtime "^6.26.0"
@@ -5973,9 +5974,10 @@ 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 "1.7.0"
-  resolved "https://codeload.github.com/matrix-org/matrix-react-sdk/tar.gz/53332018234fc9067c6200babb794ab3538a0791"
+matrix-react-sdk@1.7.1-rc.1:
+  version "1.7.1-rc.1"
+  resolved "https://registry.yarnpkg.com/matrix-react-sdk/-/matrix-react-sdk-1.7.1-rc.1.tgz#f38c894882554b5dd657a2a9bdcd3bae36aeb1bf"
+  integrity sha512-5Puz0b16eBun/1/IpV8x6xHm1qlJPHQvDbsr6LwwLSOXlqbTM2xG01h9opM06/HI9G2jVKnab9/K9KyXx2PiiQ==
   dependencies:
     babel-plugin-syntax-dynamic-import "^6.18.0"
     babel-runtime "^6.26.0"
@@ -6006,7 +6008,7 @@ 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 "2.4.3-rc.1"
     optimist "^0.6.1"
     pako "^1.0.5"
     png-chunks-extract "^1.0.0"