diff --git a/pkgs/by-name/cj/cjdns/package.nix b/pkgs/by-name/cj/cjdns/package.nix
index b52a910f59da..ce1bd7ad125d 100644
--- a/pkgs/by-name/cj/cjdns/package.nix
+++ b/pkgs/by-name/cj/cjdns/package.nix
@@ -37,6 +37,11 @@ rustPlatform.buildRustPackage rec {
       url = "https://github.com/cjdelisle/cjdns/commit/436d9a9784bae85734992c2561c778fbd2f5ac32.patch";
       hash = "sha256-THcYNGVbMx/xf3/5UIxEhz3OlODE0qiYgDBOlHunhj8=";
     })
+    # Fix build failure with Rust 1.89.0 (https://github.com/cjdelisle/cjdns/pull/1271)
+    (fetchpatch {
+      url = "https://github.com/cjdelisle/cjdns/commit/68b786aca5bfa427e5f58c029e4d9cc74969ef87.patch";
+      hash = "sha256-FmrooDzrIWUIAnzwZTVDXI+Cl8pMngPqxsJjUHVhry8=";
+    })
   ];
 
   cargoHash = "sha256-f96y6ZW0HxC+73ts5re8GIo2aigQgK3gXyF7fMrcJ0o=";