diff --git a/package-lock.json b/package-lock.json
index b20eb68..66b00eb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,8 +18,8 @@
         "@eslint/eslintrc": "^3.1.0",
         "@eslint/js": "^9.9.1",
         "@types/antlr4": "^4.7.2",
-        "@types/chai": "^4.3.8",
-        "@types/chai-spies": "^1.0.4",
+        "@types/chai": "^4.3.19",
+        "@types/chai-spies": "^1.0.6",
         "@types/fs-extra": "^11.0.4",
         "@types/glob": "^8.1.0",
         "@types/mocha": "^10.0.7",
@@ -29,8 +29,8 @@
         "@typescript-eslint/eslint-plugin": "^8.4.0",
         "@typescript-eslint/parser": "^8.4.0",
         "@vscode/test-electron": "^2.4.1",
-        "chai": "^4.3.10",
-        "chai-spies": "^1.0.0",
+        "chai": "^4.5.0",
+        "chai-spies": "^1.1.0",
         "eslint": "^9.9.1",
         "eslint-config-prettier": "^9.1.0",
         "fs-extra": "^11.2.0",
@@ -314,16 +314,18 @@
       "dev": true
     },
     "node_modules/@types/chai": {
-      "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
+      "version": "4.3.19",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.19.tgz",
+      "integrity": "sha512-2hHHvQBVE2FiSK4eN0Br6snX9MtolHaTo/batnLjlGRhoQzlCL61iVpxoqO7SfFyOw+P/pwv+0zNHzKoGWz9Cw==",
+      "dev": true,
+      "license": "MIT"
     },
     "node_modules/@types/chai-spies": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/@types/chai-spies/-/chai-spies-1.0.4.tgz",
-      "integrity": "sha512-HCG1EUGpVYmmqIG9rnSIxkng/tOzARG1HmUIV5miCp55ykqxSnVj2vlXaf6nDwaMm7qzkvNe9SHW15ywPKDqTA==",
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/@types/chai-spies/-/chai-spies-1.0.6.tgz",
+      "integrity": "sha512-xkk4HmhBB9OQeTAifa9MJ+6R5/Rq9+ungDe4JidZD+vqZVeiWZwc2i7/pd1ZKjyGlSBIQePoWdyUyFUGT0rv5w==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
         "@types/chai": "*"
       }
@@ -892,10 +894,11 @@
       }
     },
     "node_modules/chai": {
-      "version": "4.3.10",
-      "resolved": "https://registry.npmjs.org/chai/-/chai-4.3.10.tgz",
-      "integrity": "sha512-0UXG04VuVbruMUYbJ6JctvH0YnC/4q3/AkT18q4NaITo91CUm0liMS9VqzT9vZhVQ/1eqPanMWjBM+Juhfb/9g==",
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/chai/-/chai-4.5.0.tgz",
+      "integrity": "sha512-RITGBfijLkBddZvnn8jdqoTypxvqbOLYQkGGxXzeFjVHvudaPw0HNFD9x928/eUwYWd2dPCugVqspGALTZZQKw==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
         "assertion-error": "^1.1.0",
         "check-error": "^1.0.3",
@@ -903,17 +906,18 @@
         "get-func-name": "^2.0.2",
         "loupe": "^2.3.6",
         "pathval": "^1.1.1",
-        "type-detect": "^4.0.8"
+        "type-detect": "^4.1.0"
       },
       "engines": {
         "node": ">=4"
       }
     },
     "node_modules/chai-spies": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/chai-spies/-/chai-spies-1.0.0.tgz",
-      "integrity": "sha512-elF2ZUczBsFoP07qCfMO/zeggs8pqCf3fZGyK5+2X4AndS8jycZYID91ztD9oQ7d/0tnS963dPkd0frQEThDsg==",
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/chai-spies/-/chai-spies-1.1.0.tgz",
+      "integrity": "sha512-ikaUhQvQWchRYj2K54itFp3nrcxaFRpSDQxDlRzSn9aWgu9Pi7lD8yFxTso4WnQ39+WZ69oB/qOvqp+isJIIWA==",
       "dev": true,
+      "license": "MIT",
       "engines": {
         "node": ">= 4.0.0"
       },
@@ -2927,10 +2931,11 @@
       }
     },
     "node_modules/type-detect": {
-      "version": "4.0.8",
-      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
-      "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.1.0.tgz",
+      "integrity": "sha512-Acylog8/luQ8L7il+geoSxhEkazvkslg7PSNKOX59mbB9cOveP5aq9h74Y7YU8yDpJwetzQQrfIwtf4Wp4LKcw==",
       "dev": true,
+      "license": "MIT",
       "engines": {
         "node": ">=4"
       }
@@ -3296,15 +3301,15 @@
       "dev": true
     },
     "@types/chai": {
-      "version": "4.3.8",
-      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.8.tgz",
-      "integrity": "sha512-yW/qTM4mRBBcsA9Xw9FbcImYtFPY7sgr+G/O5RDYVmxiy9a+pE5FyoFUi8JYCZY5nicj8atrr1pcfPiYpeNGOA==",
+      "version": "4.3.19",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.19.tgz",
+      "integrity": "sha512-2hHHvQBVE2FiSK4eN0Br6snX9MtolHaTo/batnLjlGRhoQzlCL61iVpxoqO7SfFyOw+P/pwv+0zNHzKoGWz9Cw==",
       "dev": true
     },
     "@types/chai-spies": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/@types/chai-spies/-/chai-spies-1.0.4.tgz",
-      "integrity": "sha512-HCG1EUGpVYmmqIG9rnSIxkng/tOzARG1HmUIV5miCp55ykqxSnVj2vlXaf6nDwaMm7qzkvNe9SHW15ywPKDqTA==",
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/@types/chai-spies/-/chai-spies-1.0.6.tgz",
+      "integrity": "sha512-xkk4HmhBB9OQeTAifa9MJ+6R5/Rq9+ungDe4JidZD+vqZVeiWZwc2i7/pd1ZKjyGlSBIQePoWdyUyFUGT0rv5w==",
       "dev": true,
       "requires": {
         "@types/chai": "*"
@@ -3688,9 +3693,9 @@
       "dev": true
     },
     "chai": {
-      "version": "4.3.10",
-      "resolved": "https://registry.npmjs.org/chai/-/chai-4.3.10.tgz",
-      "integrity": "sha512-0UXG04VuVbruMUYbJ6JctvH0YnC/4q3/AkT18q4NaITo91CUm0liMS9VqzT9vZhVQ/1eqPanMWjBM+Juhfb/9g==",
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/chai/-/chai-4.5.0.tgz",
+      "integrity": "sha512-RITGBfijLkBddZvnn8jdqoTypxvqbOLYQkGGxXzeFjVHvudaPw0HNFD9x928/eUwYWd2dPCugVqspGALTZZQKw==",
       "dev": true,
       "requires": {
         "assertion-error": "^1.1.0",
@@ -3699,13 +3704,13 @@
         "get-func-name": "^2.0.2",
         "loupe": "^2.3.6",
         "pathval": "^1.1.1",
-        "type-detect": "^4.0.8"
+        "type-detect": "^4.1.0"
       }
     },
     "chai-spies": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/chai-spies/-/chai-spies-1.0.0.tgz",
-      "integrity": "sha512-elF2ZUczBsFoP07qCfMO/zeggs8pqCf3fZGyK5+2X4AndS8jycZYID91ztD9oQ7d/0tnS963dPkd0frQEThDsg==",
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/chai-spies/-/chai-spies-1.1.0.tgz",
+      "integrity": "sha512-ikaUhQvQWchRYj2K54itFp3nrcxaFRpSDQxDlRzSn9aWgu9Pi7lD8yFxTso4WnQ39+WZ69oB/qOvqp+isJIIWA==",
       "dev": true,
       "requires": {}
     },
@@ -5123,9 +5128,9 @@
       }
     },
     "type-detect": {
-      "version": "4.0.8",
-      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
-      "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.1.0.tgz",
+      "integrity": "sha512-Acylog8/luQ8L7il+geoSxhEkazvkslg7PSNKOX59mbB9cOveP5aq9h74Y7YU8yDpJwetzQQrfIwtf4Wp4LKcw==",
       "dev": true
     },
     "typescript": {
diff --git a/package.json b/package.json
index b6634d3..8580d1c 100644
--- a/package.json
+++ b/package.json
@@ -117,8 +117,8 @@
     "@eslint/eslintrc": "^3.1.0",
     "@eslint/js": "^9.9.1",
     "@types/antlr4": "^4.7.2",
-    "@types/chai": "^4.3.8",
-    "@types/chai-spies": "^1.0.4",
+    "@types/chai": "^4.3.19",
+    "@types/chai-spies": "^1.0.6",
     "@types/fs-extra": "^11.0.4",
     "@types/glob": "^8.1.0",
     "@types/mocha": "^10.0.7",
@@ -128,8 +128,8 @@
     "@typescript-eslint/eslint-plugin": "^8.4.0",
     "@typescript-eslint/parser": "^8.4.0",
     "@vscode/test-electron": "^2.4.1",
-    "chai": "^4.3.10",
-    "chai-spies": "^1.0.0",
+    "chai": "^4.5.0",
+    "chai-spies": "^1.1.0",
     "eslint": "^9.9.1",
     "eslint-config-prettier": "^9.1.0",
     "fs-extra": "^11.2.0",
diff --git a/src/test/suite/FshCompletionProvider.test.ts b/src/test/suite/FshCompletionProvider.test.ts
index 4580095..920a21f 100644
--- a/src/test/suite/FshCompletionProvider.test.ts
+++ b/src/test/suite/FshCompletionProvider.test.ts
@@ -13,7 +13,8 @@ import {
 import { FshDefinitionProvider } from '../../FshDefinitionProvider';
 
 chai.use(spies);
-const { assert, expect } = chai;
+const { expect } = chai;
+const assert: Chai.AssertStatic = chai.assert;
 const { EOL } = os;
 
 // Since the tests actually run from the build output directory,
diff --git a/src/test/suite/FshDefinitionProvider.test.ts b/src/test/suite/FshDefinitionProvider.test.ts
index bafbcdf..8a16c9e 100644
--- a/src/test/suite/FshDefinitionProvider.test.ts
+++ b/src/test/suite/FshDefinitionProvider.test.ts
@@ -8,7 +8,8 @@ import * as parser from '../../parser';
 import { FshDefinitionProvider, NameInfo } from '../../FshDefinitionProvider';
 
 chai.use(spies);
-const { assert, expect } = chai;
+const { expect } = chai;
+const assert: Chai.AssertStatic = chai.assert;
 
 suite('FshDefinitionProvider', () => {
   let extension: vscode.Extension<any>;
diff --git a/src/test/suite/SushiBuildTaskProvider.test.ts b/src/test/suite/SushiBuildTaskProvider.test.ts
index 178e766..7bfb13e 100644
--- a/src/test/suite/SushiBuildTaskProvider.test.ts
+++ b/src/test/suite/SushiBuildTaskProvider.test.ts
@@ -2,7 +2,7 @@ import chai from 'chai';
 import * as vscode from 'vscode';
 import { getSushiBuildTask } from '../../SushiBuildTaskProvider';
 
-const { assert } = chai;
+const assert: Chai.AssertStatic = chai.assert;
 
 suite('SushiBuildTaskProvider', () => {
   suite('getSushiBuildTask', () => {