diff --git a/package-lock.json b/package-lock.json
index 0e38ca36a..e98e528bb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -65,7 +65,7 @@
         "semantic-release-chrome": "^3.2.0",
         "simulant": "^0.2.2",
         "sinon": "^18.0.0",
-        "sinon-chai": "^3.7.0",
+        "sinon-chai": "^4.0.0",
         "sinon-chrome": "^3.0.1",
         "snowpack": "^3.8.8",
         "snowpack-plugin-replace": "^1.0.4",
@@ -20589,12 +20589,12 @@
       }
     },
     "node_modules/sinon-chai": {
-      "version": "3.7.0",
-      "resolved": "https://registry.npmjs.org/sinon-chai/-/sinon-chai-3.7.0.tgz",
-      "integrity": "sha512-mf5NURdUaSdnatJx3uhoBOrY9dtL19fiOtAdT1Azxg3+lNJFiuN0uzaU3xX1LeAfL17kHQhTAJgpsfhbMJMY2g==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/sinon-chai/-/sinon-chai-4.0.0.tgz",
+      "integrity": "sha512-cWqO7O2I4XfJDWyWElAQ9D/dtdh5Mo0RHndsfiiYyjWnlPzBJdIvjCVURO4EjyYaC3BjV+ISNXCfTXPXTEIEWA==",
       "dev": true,
       "peerDependencies": {
-        "chai": "^4.0.0",
+        "chai": "^5.0.0",
         "sinon": ">=4.0.0"
       }
     },
@@ -38730,9 +38730,9 @@
       }
     },
     "sinon-chai": {
-      "version": "3.7.0",
-      "resolved": "https://registry.npmjs.org/sinon-chai/-/sinon-chai-3.7.0.tgz",
-      "integrity": "sha512-mf5NURdUaSdnatJx3uhoBOrY9dtL19fiOtAdT1Azxg3+lNJFiuN0uzaU3xX1LeAfL17kHQhTAJgpsfhbMJMY2g==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/sinon-chai/-/sinon-chai-4.0.0.tgz",
+      "integrity": "sha512-cWqO7O2I4XfJDWyWElAQ9D/dtdh5Mo0RHndsfiiYyjWnlPzBJdIvjCVURO4EjyYaC3BjV+ISNXCfTXPXTEIEWA==",
       "dev": true,
       "requires": {}
     },
diff --git a/package.json b/package.json
index f1da325c3..587bcc580 100644
--- a/package.json
+++ b/package.json
@@ -103,7 +103,7 @@
     "semantic-release-chrome": "^3.2.0",
     "simulant": "^0.2.2",
     "sinon": "^18.0.0",
-    "sinon-chai": "^3.7.0",
+    "sinon-chai": "^4.0.0",
     "sinon-chrome": "^3.0.1",
     "snowpack": "^3.8.8",
     "snowpack-plugin-replace": "^1.0.4",