diff --git a/pkgs/by-name/ou/outline/package.nix b/pkgs/by-name/ou/outline/package.nix
index 592ec0065733..b7889be1b65b 100644
--- a/pkgs/by-name/ou/outline/package.nix
+++ b/pkgs/by-name/ou/outline/package.nix
@@ -20,6 +20,12 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-LHU3OQglvxLVemDKoDxeI7cGyuSnIUYoPV3aj/LR9XA=";
   };
 
+  patches = [
+    # Remove after upstream updates to Yarn 4.14
+    # https://github.com/outline/outline/blob/main/package.json#L398
+    ./yarn-4.14-support.patch
+  ];
+
   missingHashes = ./missing-hashes.json;
 
   nativeBuildInputs = [
@@ -29,8 +35,8 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   offlineCache = yarn-berry_4.fetchYarnBerryDeps {
-    inherit (finalAttrs) src missingHashes;
-    hash = "sha256-j1MGkIJGjXsoT9aOADRtdywRNI2k5hKeD3O20iUh0sA=";
+    inherit (finalAttrs) src missingHashes patches;
+    hash = "sha256-yMHpM/1hQ/86MItCu8SP82CgF/ED97l6lVHF+Cf8h+U=";
   };
 
   buildPhase = ''
diff --git a/pkgs/by-name/ou/outline/yarn-4.14-support.patch b/pkgs/by-name/ou/outline/yarn-4.14-support.patch
new file mode 100644
index 000000000000..6c50d24297b0
--- /dev/null
+++ b/pkgs/by-name/ou/outline/yarn-4.14-support.patch
@@ -0,0 +1,22 @@
+--- a/.yarnrc.yml
++++ b/.yarnrc.yml
+@@ -12,3 +12,8 @@ npmPreapprovedPackages:
+ npmAuditIgnoreAdvisories:
+   - "1113517" # GHSA-mw96-cpmx-2vgc rollup <2.80.0 path traversal (workbox-build, build-time)
+   - "1113686" # GHSA-5c6j-r48x-rmvq serialize-javascript RCE (@rollup/plugin-terser, build-time)
++
++approvedGitRepositories:
++  - "**"
++
++enableScripts: true
+--- a/yarn.lock
++++ b/yarn.lock
+@@ -2,7 +2,7 @@
+ # Manual changes might be lost - proceed with caution!
+ 
+ __metadata:
+-  version: 8
++  version: 9
+   cacheKey: 10c0
+ 
+ "@antfu/install-pkg@npm:^1.1.0":