diff --git a/package-lock.json b/package-lock.json
index 8e67bab..3e72428 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,7 +16,7 @@
       },
       "devDependencies": {
         "@rollup/plugin-typescript": "^11.1.4",
-        "@types/chai": "^4.3.6",
+        "@types/chai": "^4.3.8",
         "@types/chai-spies": "^1.0.3",
         "@types/geojson": "^7946.0.10",
         "@types/jquery": "^3.5.22",
@@ -882,9 +882,9 @@
       }
     },
     "node_modules/@types/chai": {
-      "version": "4.3.6",
-      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.6.tgz",
-      "integrity": "sha512-VOVRLM1mBxIRxydiViqPcKn6MIxZytrbMpd6RJLIWKxUNr3zux8no0Oc7kJx0WAPIitgZ0gkrDS+btlqQpubpw==",
+      "version": "4.3.8",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.8.tgz",
+      "integrity": "sha512-yW/qTM4mRBBcsA9Xw9FbcImYtFPY7sgr+G/O5RDYVmxiy9a+pE5FyoFUi8JYCZY5nicj8atrr1pcfPiYpeNGOA==",
       "dev": true
     },
     "node_modules/@types/chai-spies": {
diff --git a/package.json b/package.json
index 4fc6ea1..eecde28 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
   },
   "devDependencies": {
     "@rollup/plugin-typescript": "^11.1.4",
-    "@types/chai": "^4.3.6",
+    "@types/chai": "^4.3.8",
     "@types/chai-spies": "^1.0.3",
     "@types/geojson": "^7946.0.10",
     "@types/jquery": "^3.5.22",