diff --git a/package.json b/package.json
index 965b2138eb..d64afe26b7 100644
--- a/package.json
+++ b/package.json
@@ -74,7 +74,7 @@
         "@matrix-org/olm": "3.2.15",
         "@matrix-org/react-sdk-module-api": "^2.2.1",
         "gfm.css": "^1.1.2",
-        "jsrsasign": "^10.5.25",
+        "jsrsasign": "^11.0.0",
         "katex": "^0.16.0",
         "lodash": "^4.17.21",
         "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
diff --git a/yarn.lock b/yarn.lock
index 2d87c0c128..9f7d544caa 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8202,10 +8202,10 @@ jsonfile@^4.0.0:
   optionalDependencies:
     graceful-fs "^4.1.6"
 
-jsrsasign@^10.5.25:
-  version "10.9.0"
-  resolved "https://registry.yarnpkg.com/jsrsasign/-/jsrsasign-10.9.0.tgz#cc3f316e7e4c112a976193f9d2c93deb5a0745ee"
-  integrity sha512-QWLUikj1SBJGuyGK8tjKSx3K7Y69KYJnrs/pQ1KZ6wvZIkHkWjZ1PJDpuvc1/28c1uP0KW9qn1eI1LzHQqDOwQ==
+jsrsasign@^11.0.0:
+  version "11.0.0"
+  resolved "https://registry.yarnpkg.com/jsrsasign/-/jsrsasign-11.0.0.tgz#766570c21f87d68075a142f5188f7e583cee9d70"
+  integrity sha512-BtRwVKS+5dsgPpAtzJcpo5OoWjSs1/zllSBG0+8o8/aV0Ki76m6iZwHnwnsqoTdhfFZDN1XIdcaZr5ZkP+H2gg==
 
 "jsx-ast-utils@^2.4.1 || ^3.0.0":
   version "3.3.5"