diff --git a/yarn.lock b/yarn.lock
index 58226dee..50e25051 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5700,9 +5700,9 @@ locate-path@^3.0.0:
     path-exists "^3.0.0"
 
 lodash-es@^4.2.1:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash-es/-/lodash-es-4.17.15.tgz#21bd96839354412f23d7a10340e5eac6ee455d78"
-  integrity sha512-rlrc3yU3+JNOpZ9zj5pQtxnx2THmvRykwL4Xlxoa8I9lHBlVbbyPhgyPMioxVZ4NqyxaVVtaJnzsyOidQIhyyQ==
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash-es/-/lodash-es-4.17.21.tgz#43e626c46e6591b7750beb2b50117390c609e3ee"
+  integrity sha512-mKnC+QJ9pWVzv+C4/U3rRsHapFfHvQFoFB92e52xeyGMcX6/OlIl78je1u8vePzYZSkkogMPJ2yjxxsb89cxyw==
 
 lodash.clonedeep@^4.5.0:
   version "4.5.0"
@@ -5888,6 +5888,22 @@ matrix-js-sdk@2.3.0:
     request "^2.88.0"
     unhomoglyph "^1.0.2"
 
+matrix-js-sdk@2.3.0-rc.1:
+  version "2.3.0-rc.1"
+  resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-2.3.0-rc.1.tgz#fe90e3c60f17dacea6454786269a1ba497d8d401"
+  integrity sha512-lxk/aBNrTklG5Ya8vhc8kbBL2jrPU1vvDZ87GXVMGL3L1Cg3oNnClJXqyf/MwnY8egfqHWLrMsQRSerOPVgnEQ==
+  dependencies:
+    another-json "^0.2.0"
+    babel-runtime "^6.26.0"
+    bluebird "^3.5.0"
+    browser-request "^0.3.3"
+    bs58 "^4.0.1"
+    content-type "^1.0.2"
+    loglevel "1.6.1"
+    qs "^6.5.2"
+    request "^2.88.0"
+    unhomoglyph "^1.0.2"
+
 matrix-mock-request@^1.2.3:
   version "1.2.3"
   resolved "https://registry.yarnpkg.com/matrix-mock-request/-/matrix-mock-request-1.2.3.tgz#56b15d86e2601a9b48a854844396d18caab649c8"
@@ -5896,10 +5912,10 @@ 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@1.5.1:
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/matrix-react-sdk/-/matrix-react-sdk-1.5.1.tgz#3b822891dd297533e4ab0b562eff5e9d8bd12ab0"
+  integrity sha512-LeB1ZR6pqGAjQ8ODzyhejs4DnYKiiUDmekLSWpJiz30tJrDwXCFM5nUC8CUj4b9xbExrwTn7HP/RZO/CLS8MlA==
   dependencies:
     babel-plugin-syntax-dynamic-import "^6.18.0"
     babel-runtime "^6.26.0"
@@ -5928,7 +5944,7 @@ 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 "2.3.0-rc.1"
     optimist "^0.6.1"
     pako "^1.0.5"
     png-chunks-extract "^1.0.0"
@@ -8366,15 +8382,7 @@ source-map-support@^0.4.15:
   dependencies:
     source-map "^0.5.6"
 
-source-map-support@^0.5.12, source-map-support@^0.5.13, source-map-support@~0.5.12:
-  version "0.5.13"
-  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.13.tgz#31b24a9c2e73c2de85066c0feb7d44767ed52932"
-  integrity sha512-SHSKFHadjVA5oR4PPqhtAVdcBWwRYVd6g6cAXnIbRiIwc2EhPrTuKUBdSLvlEKyIP3GCf89fltvcZiP9MMFA1w==
-  dependencies:
-    buffer-from "^1.0.0"
-    source-map "^0.6.0"
-
-source-map-support@~0.5.10:
+source-map-support@^0.5.12, source-map-support@^0.5.13, source-map-support@~0.5.10, source-map-support@~0.5.12:
   version "0.5.13"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.13.tgz#31b24a9c2e73c2de85066c0feb7d44767ed52932"
   integrity sha512-SHSKFHadjVA5oR4PPqhtAVdcBWwRYVd6g6cAXnIbRiIwc2EhPrTuKUBdSLvlEKyIP3GCf89fltvcZiP9MMFA1w==
@@ -8776,10 +8784,10 @@ terser@^3.14.1:
     source-map "~0.6.1"
     source-map-support "~0.5.10"
 
-terser@^4.0.0:
-  version "4.1.2"
-  resolved "https://registry.yarnpkg.com/terser/-/terser-4.1.2.tgz#b2656c8a506f7ce805a3f300a2ff48db022fa391"
-  integrity sha512-jvNoEQSPXJdssFwqPSgWjsOrb+ELoE+ILpHPKXC83tIxOlh2U75F1KuB2luLD/3a6/7K3Vw5pDn+hvu0C4AzSw==
+terser@^4.1.2:
+  version "4.8.0"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-4.8.0.tgz#63056343d7c70bb29f3af665865a46fe03a0df17"
+  integrity sha512-EAPipTNeWsb/3wLPeup1tVPaXfIaU68xMnVdPafIL1TV05OhASArYyIfFvnvJCNrR2NIOvDVNNTFRa+Re2MWyw==
   dependencies:
     commander "^2.20.0"
     source-map "~0.6.1"