diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3e5801e5..7ce97bba 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+Changes in [1.6.4](https://github.com/vector-im/riot-web/releases/tag/v1.6.4) (2020-06-05)
+==========================================================================================
+[Full Changelog](https://github.com/vector-im/riot-web/compare/v1.6.3...v1.6.4)
+
+* Upgrade to JS SDK 6.2.1 and React SDK 2.7.1
+
 Changes in [1.6.3](https://github.com/vector-im/riot-web/releases/tag/v1.6.3) (2020-06-04)
 ==========================================================================================
 [Full Changelog](https://github.com/vector-im/riot-web/compare/v1.6.3-rc.1...v1.6.3)
diff --git a/package.json b/package.json
index 49f0d604..9e969841 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "riot-web",
   "productName": "Riot",
-  "version": "1.6.3",
+  "version": "1.6.4",
   "description": "A feature-rich client for Matrix.org",
   "author": "New Vector Ltd.",
   "repository": {
@@ -60,8 +60,8 @@
     "browser-request": "^0.3.3",
     "gfm.css": "^1.1.2",
     "highlight.js": "^9.13.1",
-    "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
-    "matrix-react-sdk": "github:matrix-org/matrix-react-sdk#develop",
+    "matrix-js-sdk": "6.2.1",
+    "matrix-react-sdk": "2.7.1",
     "olm": "https://packages.matrix.org/npm/olm/olm-3.1.4.tgz",
     "postcss-easings": "^2.0.0",
     "prop-types": "^15.7.2",
diff --git a/yarn.lock b/yarn.lock
index 3f11ca8f..e39f4d64 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3716,15 +3716,15 @@ emoji-regex@^8.0.0:
   resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-8.0.0.tgz#e818fd69ce5ccfcb404594f842963bf53164cc37"
   integrity sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==
 
-emojibase-data@^5.0.1:
-  version "5.0.1"
-  resolved "https://registry.yarnpkg.com/emojibase-data/-/emojibase-data-5.0.1.tgz#ce6fe36b4affd3578e0be8779211018a2fdae960"
-  integrity sha512-rYWlogJ2q5P78U8Xx1vhsXHcYKu1wFnr7+o6z9QHssZ1SsJLTCkJINZIPHRFWuDreAUK457TkqHpdOXElu0fzA==
+emojibase-data@^4.0.2:
+  version "4.2.1"
+  resolved "https://registry.yarnpkg.com/emojibase-data/-/emojibase-data-4.2.1.tgz#3d1f0c69ddbb2ca7b7014f5e34654190802a40df"
+  integrity sha512-O0vxoPMgVkRq/uII/gdAjz9RwNv6ClJrd3J9QCCRC4btZRmeut/qohC/Fi+NNXUcjY08RWNTvxSnq/vij8hvrw==
 
-emojibase-regex@^4.0.1:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/emojibase-regex/-/emojibase-regex-4.0.1.tgz#a2cd4bbb42825422da9ec72f15e970bc2c90b46a"
-  integrity sha512-S42UHkFfz15i4NNz+wi9iMKFo+B6Kalc6PJLpYX0BUANViXw4vSyYZMFdBGRLduSabWHuEcTLZl9xOa2YP3eJw==
+emojibase-regex@^3.0.0:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/emojibase-regex/-/emojibase-regex-3.2.1.tgz#122935958c9a49c96bb29ac69ccbbac0b2e7022d"
+  integrity sha512-VAX2Rc2U/alu5q6P2cET2alzC63o1Uarm6Ea/b3ab+KOzxZT4JKmB0tCU1sTZvfNKa16KMLCK2k7hJBHJq4vWQ==
 
 emojis-list@^2.0.0:
   version "2.1.0"
@@ -6961,9 +6961,10 @@ mathml-tag-names@^2.1.1:
   resolved "https://registry.yarnpkg.com/mathml-tag-names/-/mathml-tag-names-2.1.3.tgz#4ddadd67308e780cf16a47685878ee27b736a0a3"
   integrity sha512-APMBEanjybaPzUrfqU0IMU5I0AswKMH7k8OTLs0vvV4KZpExkTkY87nR/zpbuTPj+gARop7aGUbl11pnDfW6xg==
 
-"matrix-js-sdk@github:matrix-org/matrix-js-sdk#develop":
-  version "6.2.0"
-  resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/ef1d5e3d765bc4dc133c0637434c2ca9941ff97b"
+matrix-js-sdk@6.2.1:
+  version "6.2.1"
+  resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-6.2.1.tgz#d5f76491a650c0a36fcdd078cff59f2da96edd7b"
+  integrity sha512-X12Y2SMg8MOJwE5P3VMsMV/mnQHOmyJkF+FZRida124w4B4tBJouaNxteYyYaH34w+wyaKGxuqEBXecfSpfvbw==
   dependencies:
     "@babel/runtime" "^7.8.3"
     another-json "^0.2.0"
@@ -6983,9 +6984,10 @@ matrix-mock-request@^1.2.3:
     bluebird "^3.5.0"
     expect "^1.20.2"
 
-"matrix-react-sdk@github:matrix-org/matrix-react-sdk#develop":
-  version "2.7.0"
-  resolved "https://codeload.github.com/matrix-org/matrix-react-sdk/tar.gz/3c73930e9a4a841d646a13002f9d5a154968f8fa"
+matrix-react-sdk@2.7.1:
+  version "2.7.1"
+  resolved "https://registry.yarnpkg.com/matrix-react-sdk/-/matrix-react-sdk-2.7.1.tgz#bfde7e0d074769b209fa769d8dac6ad255c8b409"
+  integrity sha512-xf15VfHv/zoW1FnTdc7Dn0PITc8UuCqGlwCI2sMihp6kXrvsiUxaNkWTXzLbcwwX5Oahc3NQ7dkLaGB2AoXjIA==
   dependencies:
     "@babel/runtime" "^7.8.3"
     await-lock "^2.0.1"
@@ -6998,8 +7000,8 @@ matrix-mock-request@^1.2.3:
     create-react-class "^15.6.0"
     diff-dom "^4.1.3"
     diff-match-patch "^1.0.4"
-    emojibase-data "^5.0.1"
-    emojibase-regex "^4.0.1"
+    emojibase-data "^4.0.2"
+    emojibase-regex "^3.0.0"
     escape-html "^1.0.3"
     file-saver "^1.3.3"
     filesize "3.5.6"
@@ -7013,7 +7015,7 @@ matrix-mock-request@^1.2.3:
     is-ip "^2.0.0"
     linkifyjs "^2.1.6"
     lodash "^4.17.14"
-    matrix-js-sdk "github:matrix-org/matrix-js-sdk#develop"
+    matrix-js-sdk "6.2.1"
     minimist "^1.2.0"
     pako "^1.0.5"
     parse5 "^5.1.1"