diff --git a/package.json b/package.json
index 3d52dbaa39..a707a1fb09 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "gemini-scrollbar": "github:matrix-org/gemini-scrollbar#91e1e566",
     "gfm.css": "^1.1.2",
     "highlight.js": "^9.13.1",
-    "matrix-js-sdk": "5.1.1-rc.1",
+    "matrix-js-sdk": "5.1.1",
     "matrix-react-sdk": "2.2.3-rc.1",
     "olm": "https://packages.matrix.org/npm/olm/olm-3.1.4.tgz",
     "postcss-easings": "^2.0.0",
diff --git a/yarn.lock b/yarn.lock
index a95ccff3d3..cf3d9f9835 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7497,6 +7497,21 @@ 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@5.1.1:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-5.1.1.tgz#d93c2db08acf07e894fb85345d3eaa8d4736b56c"
+  integrity sha512-zCkylD/oia9v/9Fbx54k/aBNd3szDflscViXq0gf2fQlKzTJRT3LoCAXZ9Uwr7gJ8AE8kFquyZ7revk3Y5YmPQ==
+  dependencies:
+    "@babel/runtime" "^7.8.3"
+    another-json "^0.2.0"
+    browser-request "^0.3.3"
+    bs58 "^4.0.1"
+    content-type "^1.0.2"
+    loglevel "^1.6.4"
+    qs "^6.5.2"
+    request "^2.88.0"
+    unhomoglyph "^1.0.2"
+
 matrix-js-sdk@5.1.1-rc.1:
   version "5.1.1-rc.1"
   resolved "https://registry.yarnpkg.com/matrix-js-sdk/-/matrix-js-sdk-5.1.1-rc.1.tgz#e3872696b8e6ec3fcae2d1ba1491e6a08d20954a"