diff --git a/package.json b/package.json
index 86f45af52a..f41f14fd9e 100644
--- a/package.json
+++ b/package.json
@@ -74,7 +74,7 @@
         "gfm.css": "^1.1.2",
         "jsrsasign": "^10.5.25",
         "katex": "^0.16.0",
-        "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
+        "matrix-js-sdk": "27.0.0-rc.1",
         "matrix-react-sdk": "github:matrix-org/matrix-react-sdk#develop",
         "matrix-widget-api": "^1.3.1",
         "react": "17.0.2",
diff --git a/yarn.lock b/yarn.lock
index 256e5d59ca..23e812ef88 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1617,6 +1617,11 @@
   resolved "https://registry.yarnpkg.com/@matrix-org/matrix-sdk-crypto-js/-/matrix-sdk-crypto-js-0.1.0.tgz#766580036d4df12120ded223e13b5640e77db136"
   integrity sha512-ra/bcFdleC1iRNms2I96UXA0NvQYWpMsHrV5EfJRS7qV1PtnQNvgsvMfjMbkx8QT2ErEmIhsvB5fPCpfp8BSuw==
 
+"@matrix-org/matrix-sdk-crypto-js@^0.1.1":
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/@matrix-org/matrix-sdk-crypto-js/-/matrix-sdk-crypto-js-0.1.2.tgz#b58679e161f3d734359a8665922956309b1a4417"
+  integrity sha512-bbal0RcWwerS/DgqhOgM7wkXJ2YSv9fySK/qgLlrAsdYLpMSTqG8wDQ89/v+RYo9WmA5hwUN/wXcCDdFaFEXQQ==
+
 "@matrix-org/matrix-wysiwyg@^2.3.0":
   version "2.3.1"
   resolved "https://registry.yarnpkg.com/@matrix-org/matrix-wysiwyg/-/matrix-wysiwyg-2.3.1.tgz#4b607323f3ffd8c332abeba7226010ecc031ed12"
@@ -4287,6 +4292,11 @@ crypto-browserify@^3.11.0:
     randombytes "^2.0.0"
     randomfill "^1.0.3"
 
+crypto-js@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/crypto-js/-/crypto-js-4.1.1.tgz#9e485bcf03521041bd85844786b83fb7619736cf"
+  integrity sha512-o2JlM7ydqd3Qk9CA0L4NL6mTzU2sdx96a+oOfPu8Mkl/PK51vSyoi8/rQ8NknZtk44vq15lmhAj9CIAGwgeWKw==
+
 css-blank-pseudo@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/css-blank-pseudo/-/css-blank-pseudo-0.1.4.tgz#dfdefd3254bf8a82027993674ccf35483bfcb3c5"
@@ -8412,6 +8422,26 @@ matrix-events-sdk@0.0.1:
   resolved "https://registry.yarnpkg.com/matrix-events-sdk/-/matrix-events-sdk-0.0.1.tgz#c8c38911e2cb29023b0bbac8d6f32e0de2c957dd"
   integrity sha512-1QEOsXO+bhyCroIe2/A5OwaxHvBm7EsSQ46DEDn8RBIfQwN5HWBpFvyWWR4QY0KHPPnnJdI99wgRiAl7Ad5qaA==
 
+matrix-js-sdk@27.0.0-rc.1:
+  version "27.0.0-rc.1"
+  resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-27.0.0-rc.1.tgz#85a8a64b6d88fd57d3d1ee0b69a515ebb039e882"
+  integrity sha512-6bo4PbUCTvjqAf2urBf3L1UxE72//ubL4QsNOJmU9/IfLZQOql+ByvRKrKES245H4KxQHLg1s4lug8sIcfISBQ==
+  dependencies:
+    "@babel/runtime" "^7.12.5"
+    "@matrix-org/matrix-sdk-crypto-js" "^0.1.1"
+    another-json "^0.2.0"
+    bs58 "^5.0.0"
+    content-type "^1.0.4"
+    jwt-decode "^3.1.2"
+    loglevel "^1.7.1"
+    matrix-events-sdk "0.0.1"
+    matrix-widget-api "^1.3.1"
+    oidc-client-ts "^2.2.4"
+    p-retry "4"
+    sdp-transform "^2.14.1"
+    unhomoglyph "^1.0.6"
+    uuid "9"
+
 "matrix-js-sdk@github:matrix-org/matrix-js-sdk#develop":
   version "26.2.0"
   resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/5751df1288b340fe08358145e5d47d28ed69465a"
@@ -9259,6 +9289,14 @@ obuf@^1.0.0, obuf@^1.1.2:
   resolved "https://registry.yarnpkg.com/obuf/-/obuf-1.1.2.tgz#09bea3343d41859ebd446292d11c9d4db619084e"
   integrity sha512-PX1wu0AmAdPqOL1mWhqmlOd8kOIZQwGZw6rh7uby9fTc5lhaOWFLX3I6R1hrF9k3zUY40e6igsLGkDXK92LJNg==
 
+oidc-client-ts@^2.2.4:
+  version "2.2.4"
+  resolved "https://registry.yarnpkg.com/oidc-client-ts/-/oidc-client-ts-2.2.4.tgz#7d86b5efe2248f3637a6f3a0ee1af86764aea125"
+  integrity sha512-nOZwIomju+AmXObl5Oq5PjrES/qTt8bLsENJCIydVgi9TEWk7SCkOU6X3RNkY7yfySRM1OJJvDKdREZdmnDT2g==
+  dependencies:
+    crypto-js "^4.1.1"
+    jwt-decode "^3.1.2"
+
 on-finished@2.4.1:
   version "2.4.1"
   resolved "https://registry.yarnpkg.com/on-finished/-/on-finished-2.4.1.tgz#58c8c44116e54845ad57f14ab10b03533184ac3f"