diff --git a/package.json b/package.json
index e709662020..f8aa8db588 100644
--- a/package.json
+++ b/package.json
@@ -87,7 +87,7 @@
     "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",
diff --git a/yarn.lock b/yarn.lock
index aa0a06e588..bc3ee0282f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5192,9 +5192,10 @@ 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 "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"