diff --git a/package.json b/package.json
index b517b0e11a..a452ed7c61 100644
--- a/package.json
+++ b/package.json
@@ -60,8 +60,8 @@
     "gfm.css": "^1.1.2",
     "jsrsasign": "^10.2.0",
     "katex": "^0.12.0",
-    "matrix-js-sdk": "15.1.0",
-    "matrix-react-sdk": "3.34.0",
+    "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
+    "matrix-react-sdk": "github:matrix-org/matrix-react-sdk#develop",
     "matrix-widget-api": "^0.1.0-beta.17",
     "prop-types": "^15.7.2",
     "react": "17.0.2",
diff --git a/yarn.lock b/yarn.lock
index d00817227d..475ccaf653 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7854,10 +7854,9 @@ 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@15.1.0:
+"matrix-js-sdk@github:matrix-org/matrix-js-sdk#develop":
   version "15.1.0"
-  resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-15.1.0.tgz#46bb1185e80d1c9aeccf290bc214a0ad27351aa3"
-  integrity sha512-1qF6RO3jrMdL2X7WsHW520oHMH6ns3rOkhdJi3PAYknCG8Yv87KCyI46o+7OgdBUTH2a+iwMcH8kP3T9/abKEA==
+  resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/1dc899ba6ec52cab3fed9783e892e62ffc93c5a7"
   dependencies:
     "@babel/runtime" "^7.12.5"
     another-json "^0.2.0"
@@ -7878,10 +7877,9 @@ matrix-mock-request@^1.2.3:
     bluebird "^3.5.0"
     expect "^1.20.2"
 
-matrix-react-sdk@3.34.0:
+"matrix-react-sdk@github:matrix-org/matrix-react-sdk#develop":
   version "3.34.0"
-  resolved "https://registry.yarnpkg.com/matrix-react-sdk/-/matrix-react-sdk-3.34.0.tgz#e46e8f895348b7f4af1f9ee4e3c1fbc17f4832e9"
-  integrity sha512-2Ey9DQ9AYT0SdShCmw95VXbtIsQWfi3rFq15zY2FM0JQpIhfqFADlN/0thcqqC5tccX9UXjBJ6NLjsTyJKWaKA==
+  resolved "https://codeload.github.com/matrix-org/matrix-react-sdk/tar.gz/06e1f8ce856cc725ddf44f6a104bae4e5879ef99"
   dependencies:
     "@babel/runtime" "^7.12.5"
     "@sentry/browser" "^6.11.0"
@@ -7912,7 +7910,7 @@ matrix-react-sdk@3.34.0:
     katex "^0.12.0"
     linkifyjs "^2.1.9"
     lodash "^4.17.20"
-    matrix-js-sdk "15.1.0"
+    matrix-js-sdk "github:matrix-org/matrix-js-sdk#develop"
     matrix-widget-api "^0.1.0-beta.17"
     minimist "^1.2.5"
     opus-recorder "^8.0.3"