diff --git a/package.json b/package.json
index 9689892e24..5d47d81ca4 100644
--- a/package.json
+++ b/package.json
@@ -78,7 +78,7 @@
     "is-ip": "^2.0.0",
     "linkifyjs": "^2.1.9",
     "lodash": "^4.17.19",
-    "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
+    "matrix-js-sdk": "9.1.0-rc.1",
     "matrix-widget-api": "^0.1.0-beta.5",
     "minimist": "^1.2.5",
     "pako": "^1.0.11",
diff --git a/yarn.lock b/yarn.lock
index 4d4152c659..04ceb32110 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6505,9 +6505,10 @@ mathml-tag-names@^2.0.1:
   resolved "https://registry.yarnpkg.com/mathml-tag-names/-/mathml-tag-names-2.1.3.tgz#4ddadd67308e780cf16a47685878ee27b736a0a3"
   integrity sha512-APMBEanjybaPzUrfqU0IMU5I0AswKMH7k8OTLs0vvV4KZpExkTkY87nR/zpbuTPj+gARop7aGUbl11pnDfW6xg==
 
-"matrix-js-sdk@github:matrix-org/matrix-js-sdk#develop":
-  version "9.0.1"
-  resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/f8863d5c2488a31a093f5a1b11761d7ac3829470"
+matrix-js-sdk@9.1.0-rc.1:
+  version "9.1.0-rc.1"
+  resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-9.1.0-rc.1.tgz#cbdad0d272152a27bb32fe74e02ad069717d2554"
+  integrity sha512-Y0ftnH3HtMaNPFyfYqbrhS6aZkdQxxeluErFmOmpMTRGuMiIGrqhdWP8Z/MCZMRP4NPAh/dN2eW0vgqH9ij52A==
   dependencies:
     "@babel/runtime" "^7.11.2"
     another-json "^0.2.0"