diff --git a/package.json b/package.json
index b032af3..dfbf359 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "@types/node": "^18",
     "@types/pg": "^8.15.6",
     "@types/pg-format": "^1.0.5",
-    "@types/sinon": "^17.0.4",
+    "@types/sinon": "^21.0.0",
     "@typescript-eslint/eslint-plugin": "^8",
     "@typescript-eslint/parser": "^8",
     "aws-cdk-lib": "2.188.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 07e70e0..fd69e9f 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -40,8 +40,8 @@ importers:
         specifier: ^1.0.5
         version: 1.0.5
       '@types/sinon':
-        specifier: ^17.0.4
-        version: 17.0.4
+        specifier: ^21.0.0
+        version: 21.0.0
       '@typescript-eslint/eslint-plugin':
         specifier: ^8
         version: 8.24.0(@typescript-eslint/parser@8.24.0(eslint@9.20.1)(typescript@5.7.3))(eslint@9.20.1)(typescript@5.7.3)
@@ -1347,6 +1347,9 @@ packages:
   '@types/sinon@17.0.4':
     resolution: {integrity: sha512-RHnIrhfPO3+tJT0s7cFaXGZvsL4bbR3/k7z3P312qMS4JaS2Tk+KiwiLx1S0rQ56ERj00u1/BtdyVd0FY+Pdew==}
 
+  '@types/sinon@21.0.0':
+    resolution: {integrity: sha512-+oHKZ0lTI+WVLxx1IbJDNmReQaIsQJjN2e7UUrJHEeByG7bFeKJYsv1E75JxTQ9QKJDp21bAa/0W2Xo4srsDnw==}
+
   '@types/sinonjs__fake-timers@8.1.5':
     resolution: {integrity: sha512-mQkU2jY8jJEF7YHjHvsQO8+3ughTL1mcnn96igfhONmR+fUPSKIkefQYpSe8bsly2Ep7oQbn/6VG5/9/0qcArQ==}
 
@@ -6480,6 +6483,10 @@ snapshots:
     dependencies:
       '@types/sinonjs__fake-timers': 8.1.5
 
+  '@types/sinon@21.0.0':
+    dependencies:
+      '@types/sinonjs__fake-timers': 8.1.5
+
   '@types/sinonjs__fake-timers@8.1.5': {}
 
   '@types/stack-utils@2.0.3': {}