diff --git a/package.json b/package.json
index 86a216f3..7a7b501c 100644
--- a/package.json
+++ b/package.json
@@ -74,8 +74,8 @@
     "gemini-scrollbar": "github:matrix-org/gemini-scrollbar#b302279",
     "gfm.css": "^1.1.2",
     "highlight.js": "^9.13.1",
-    "matrix-js-sdk": "2.3.0",
-    "matrix-react-sdk": "1.5.1",
+    "matrix-js-sdk": "2.3.1-rc.1",
+    "matrix-react-sdk": "1.5.2-rc.1",
     "modernizr": "^3.6.0",
     "olm": "https://packages.matrix.org/npm/olm/olm-3.1.0.tgz",
     "prop-types": "^15.6.2",
diff --git a/yarn.lock b/yarn.lock
index d3da1f85..c1d7df7c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5867,10 +5867,10 @@ math-random@^1.0.1:
   resolved "https://registry.yarnpkg.com/math-random/-/math-random-1.0.4.tgz#5dd6943c938548267016d4e34f057583080c514c"
   integrity sha512-rUxjysqif/BZQH2yhd5Aaq7vXMSx9NdEsQcyA07uEzIvxgI7zIr33gGsh+RU0/XjmQpCW7RsVof1vlkvQVCK5A==
 
-matrix-js-sdk@2.3.0:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-2.3.0.tgz#ed04172add2e31c532dc87e2f38c26c2a63191c6"
-  integrity sha512-jeswie7cWK7+XxcD+pQ7LplWnWkOQDa+x6y7FUUnxCdEvaj38cE5Obo9bPMjFgOln2hISlLdR8fzMNE9F4oUJA==
+matrix-js-sdk@2.3.1-rc.1:
+  version "2.3.1-rc.1"
+  resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-2.3.1-rc.1.tgz#520555cae49a88c11dbe6e445b62d1893286fbe6"
+  integrity sha512-rPsteIs/rTfTra+Tjve6e5H8HgVhREiA4bi1wb8TN/MK97z6p2LU1nniayoyn8kNz8FbTkXOavgPWZd9VsfkPQ==
   dependencies:
     another-json "^0.2.0"
     babel-runtime "^6.26.0"
@@ -5891,10 +5891,10 @@ matrix-mock-request@^1.2.3:
     bluebird "^3.5.0"
     expect "^1.20.2"
 
-matrix-react-sdk@1.5.0:
-  version "1.5.0"
-  resolved "https://registry.yarnpkg.com/matrix-react-sdk/-/matrix-react-sdk-1.5.0.tgz#4db5dacd8b7db54b6abcdb115466944f525a7943"
-  integrity sha512-qhQRXCOCYfsqvASVlqhGNLwJWTEWUWh6igSFvMH/0XvurMQukEASzSKTvEeyrI4m+xXCwaA6u4Psd9nSLWwSUQ==
+matrix-react-sdk@1.5.2-rc.1:
+  version "1.5.2-rc.1"
+  resolved "https://registry.yarnpkg.com/matrix-react-sdk/-/matrix-react-sdk-1.5.2-rc.1.tgz#c6b701e3c1b9885cd4a3330b1a2a50262e33b883"
+  integrity sha512-FSLGE/5UrzxULWUkxKAvJLWzghKBG+R0uTOkAhWk4H3geEd38Dh8MztOA8Y1eTDGBrj3YwxztdbRC/uJDzU1Cg==
   dependencies:
     babel-plugin-syntax-dynamic-import "^6.18.0"
     babel-runtime "^6.26.0"
@@ -5923,7 +5923,7 @@ matrix-react-sdk@1.5.0:
     linkifyjs "^2.1.6"
     lodash "^4.17.14"
     lolex "2.3.2"
-    matrix-js-sdk "2.3.0"
+    matrix-js-sdk "2.3.1-rc.1"
     optimist "^0.6.1"
     pako "^1.0.5"
     png-chunks-extract "^1.0.0"