diff --git a/package.json b/package.json
index d2d1c82dd9..d58d43bc57 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,7 @@
     "gfm.css": "^1.1.2",
     "jsrsasign": "^10.2.0",
     "katex": "^0.12.0",
-    "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
+    "matrix-js-sdk": "18.0.0-rc.1",
     "matrix-react-sdk": "github:matrix-org/matrix-react-sdk#develop",
     "matrix-widget-api": "^0.1.0-beta.18",
     "prop-types": "^15.7.2",
diff --git a/yarn.lock b/yarn.lock
index 06d13ad97e..34dd97a7f0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8214,6 +8214,23 @@ matrix-events-sdk@^0.0.1-beta.7:
   resolved "https://registry.yarnpkg.com/matrix-events-sdk/-/matrix-events-sdk-0.0.1-beta.7.tgz#5ffe45eba1f67cc8d7c2377736c728b322524934"
   integrity sha512-9jl4wtWanUFSy2sr2lCjErN/oC8KTAtaeaozJtrgot1JiQcEI4Rda9OLgQ7nLKaqb4Z/QUx/fR3XpDzm5Jy1JA==
 
+matrix-js-sdk@18.0.0-rc.1:
+  version "18.0.0-rc.1"
+  resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-18.0.0-rc.1.tgz#bb6261b2adfb1bbbee236296537b120a64514420"
+  integrity sha512-g4IQ5/IEvKHStm4dLwzwNHDtqQ1LaGIMsVYNARbv875WF3WRc4D56biKM6ESt+cbFjSORF1UEtO9/U9JyoPRlA==
+  dependencies:
+    "@babel/runtime" "^7.12.5"
+    another-json "^0.2.0"
+    browser-request "^0.3.3"
+    bs58 "^4.0.1"
+    content-type "^1.0.4"
+    loglevel "^1.7.1"
+    matrix-events-sdk "^0.0.1-beta.7"
+    p-retry "^4.5.0"
+    qs "^6.9.6"
+    request "^2.88.2"
+    unhomoglyph "^1.0.6"
+
 "matrix-js-sdk@github:matrix-org/matrix-js-sdk#develop":
   version "17.2.0"
   resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/03a79dc6dd631caa2655bf02290ad3a58424f0c2"