diff --git a/package-lock.json b/package-lock.json
index 2f6319e3..0297693e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
       "devDependencies": {
         "@pocket-tools/eslint-config": "1.1.0",
         "@pocket-tools/tsconfig": "2.0.1",
-        "@types/chai": "4.3.3",
+        "@types/chai": "4.3.9",
         "@types/jest": "28.1.8",
         "chai": "^4.3.6",
         "jest": "28.1.3",
@@ -1243,9 +1243,9 @@
       }
     },
     "node_modules/@types/chai": {
-      "version": "4.3.3",
-      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.3.tgz",
-      "integrity": "sha512-hC7OMnszpxhZPduX+m+nrx+uFoLkWOMiR4oa/AZF3MuSETYTZmFfJAHqZEM8MVlvfG7BEUcgvtwoCTxBp6hm3g==",
+      "version": "4.3.9",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.9.tgz",
+      "integrity": "sha512-69TtiDzu0bcmKQv3yg1Zx409/Kd7r0b5F1PfpYJfSHzLGtB53547V4u+9iqKYsTu/O2ai6KTb0TInNpvuQ3qmg==",
       "dev": true
     },
     "node_modules/@types/graceful-fs": {
@@ -6209,9 +6209,9 @@
       }
     },
     "@types/chai": {
-      "version": "4.3.3",
-      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.3.tgz",
-      "integrity": "sha512-hC7OMnszpxhZPduX+m+nrx+uFoLkWOMiR4oa/AZF3MuSETYTZmFfJAHqZEM8MVlvfG7BEUcgvtwoCTxBp6hm3g==",
+      "version": "4.3.9",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.9.tgz",
+      "integrity": "sha512-69TtiDzu0bcmKQv3yg1Zx409/Kd7r0b5F1PfpYJfSHzLGtB53547V4u+9iqKYsTu/O2ai6KTb0TInNpvuQ3qmg==",
       "dev": true
     },
     "@types/graceful-fs": {
diff --git a/package.json b/package.json
index fb4c27f6..a0f6b80e 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
   "devDependencies": {
     "@pocket-tools/eslint-config": "1.1.0",
     "@pocket-tools/tsconfig": "2.0.1",
-    "@types/chai": "4.3.3",
+    "@types/chai": "4.3.9",
     "@types/jest": "28.1.8",
     "chai": "^4.3.6",
     "jest": "28.1.3",