diff --git a/package.json b/package.json
index bd0bf2dbe..d10d40367 100644
--- a/package.json
+++ b/package.json
@@ -29,9 +29,9 @@
     "release-it": "19.0.6",
     "release-plan": "^0.18.0"
   },
-  "packageManager": "pnpm@10.34.3",
+  "packageManager": "pnpm@11.8.0",
   "volta": {
     "node": "24.13.0",
-    "pnpm": "10.34.3"
+    "pnpm": "11.8.0"
   }
 }
diff --git a/packages/ember-simple-auth/.github/workflows/ci.yml b/packages/ember-simple-auth/.github/workflows/ci.yml
index 67fc0ed5e..fc184c423 100644
--- a/packages/ember-simple-auth/.github/workflows/ci.yml
+++ b/packages/ember-simple-auth/.github/workflows/ci.yml
@@ -21,7 +21,7 @@ jobs:
       - name: Install pnpm
         uses: pnpm/action-setup@v6
         with:
-          version: 10
+          version: 11
       - name: Install Node
         uses: actions/setup-node@v6
         with:
@@ -43,7 +43,7 @@ jobs:
       - name: Install pnpm
         uses: pnpm/action-setup@v6
         with:
-          version: 10
+          version: 11
       - uses: actions/setup-node@v6
         with:
           node-version: 24.x
@@ -76,7 +76,7 @@ jobs:
       - name: Install pnpm
         uses: pnpm/action-setup@v6
         with:
-          version: 10
+          version: 11
       - name: Install Node
         uses: actions/setup-node@v6
         with: