diff --git a/package.json b/package.json
index 0f35d816d..b1208172c 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "highlight.js": "^10.5.0",
     "jsrsasign": "^10.2.0",
     "katex": "^0.12.0",
-    "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
+    "matrix-js-sdk": "12.4.0-rc.1",
     "matrix-react-sdk": "github:matrix-org/matrix-react-sdk#develop",
     "matrix-widget-api": "^0.1.0-beta.15",
     "prop-types": "^15.7.2",
diff --git a/yarn.lock b/yarn.lock
index c3d775b6d..1a75bf106 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7614,6 +7614,22 @@ mathml-tag-names@^2.1.3:
   resolved "https://registry.yarnpkg.com/mathml-tag-names/-/mathml-tag-names-2.1.3.tgz#4ddadd67308e780cf16a47685878ee27b736a0a3"
   integrity sha512-APMBEanjybaPzUrfqU0IMU5I0AswKMH7k8OTLs0vvV4KZpExkTkY87nR/zpbuTPj+gARop7aGUbl11pnDfW6xg==
 
+matrix-js-sdk@12.4.0-rc.1:
+  version "12.4.0-rc.1"
+  resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-12.4.0-rc.1.tgz#6eee9f159bcc5dd968346a9ce5c7b7427636f57c"
+  integrity sha512-6AGIEJvgWlNYyzxPj/V13s9JUg8zsiJ9Hyj6yTpDahufkAUT5yhpFzdPNNRaLlVxHox5HlwJJBdyNQtML727Og==
+  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"
+    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 "12.3.1"
   resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/3216d7e5a7a333212b00d4d7578e29a9f0e247d8"