diff --git a/client/zotero-client/package-lock.json b/client/zotero-client/package-lock.json
index 9a46a5f9..2dbbece7 100644
--- a/client/zotero-client/package-lock.json
+++ b/client/zotero-client/package-lock.json
@@ -1733,16 +1733,16 @@
       "dev": true
     },
     "chai": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/chai/-/chai-4.2.0.tgz",
-      "integrity": "sha512-XQU3bhBukrOsQCuwZndwGcCVQHyZi53fQ6Ys1Fym7E4olpIqqZZhhoFJoaKVvV17lWQoXYwgWN2nF5crA8J2jw==",
+      "version": "4.3.4",
+      "resolved": "https://registry.npmjs.org/chai/-/chai-4.3.4.tgz",
+      "integrity": "sha512-yS5H68VYOCtN1cjfwumDSuzn/9c+yza4f3reKXlE5rUg7SFcCEy90gJvydNgOYtblyf4Zi6jIWRnXOgErta0KA==",
       "dev": true,
       "requires": {
         "assertion-error": "^1.1.0",
         "check-error": "^1.0.2",
         "deep-eql": "^3.0.1",
         "get-func-name": "^2.0.0",
-        "pathval": "^1.1.0",
+        "pathval": "^1.1.1",
         "type-detect": "^4.0.5"
       }
     },
@@ -4633,9 +4633,9 @@
       "integrity": "sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw=="
     },
     "pathval": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.0.tgz",
-      "integrity": "sha1-uULm1L3mUwBe9rcTYd74cn0GReA=",
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.1.tgz",
+      "integrity": "sha512-Dp6zGqpTdETdR63lehJYPeIOqpiNBNtc7BpWSLrOje7UaIsE5aY92r/AunQA7rsXvet3lrJ3JnZX29UPTKXyKQ==",
       "dev": true
     },
     "pbkdf2": {
diff --git a/client/zotero-client/package.json b/client/zotero-client/package.json
index 7cae79e9..1979b3e5 100644
--- a/client/zotero-client/package.json
+++ b/client/zotero-client/package.json
@@ -36,7 +36,7 @@
     "babel-eslint": "10.1.0",
     "babel-plugin-transform-es2015-modules-commonjs": "6.26.2",
     "browserify": "^14.5.0",
-    "chai": "^4.1.2",
+    "chai": "4.3.4",
     "chai-as-promised": "^7.1.1",
     "chokidar": "^2.1.2",
     "co-mocha": "^1.2.1",