diff --git a/package.json b/package.json
index 9e0eb4cb..1df33f19 100644
--- a/package.json
+++ b/package.json
@@ -58,11 +58,11 @@
     "@angular/language-service": "7.1.0",
     "@nrwl/builders": "7.0.2",
     "@nrwl/schematics": "7.0.2",
-    "@types/chai": "4.1.7",
+    "@types/chai": "4.3.5",
     "@types/expect": "1.20.3",
     "@types/jest": "23.3.9",
     "@types/node": "10.12.10",
-    "chai": "4.2.0",
+    "chai": "4.3.8",
     "codelyzer": "4.5.0",
     "jest": "23.6.0",
     "jest-preset-angular": "6.0.1",
diff --git a/yarn.lock b/yarn.lock
index 9a31c4ca..3e6c33df 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -334,10 +334,10 @@
     semver "5.5.1"
     semver-intersect "1.4.0"
 
-"@types/chai@4.1.7":
-  version "4.1.7"
-  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.1.7.tgz#1b8e33b61a8c09cbe1f85133071baa0dbf9fa71a"
-  integrity sha512-2Y8uPt0/jwjhQ6EiluT0XCri1Dbplr0ZxfFXUz+ye13gaqE8u5gL5ppao1JrUYr9cIip5S6MvQzBS7Kke7U9VA==
+"@types/chai@4.3.5":
+  version "4.3.5"
+  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.3.5.tgz#ae69bcbb1bebb68c4ac0b11e9d8ed04526b3562b"
+  integrity sha512-mEo1sAde+UCE6b2hxn332f1g1E8WfYRu6p5SvTKr2ZKC1f7gFJXk4h5PyGP9Dt6gCaG8y8XhwnXWC6Iy2cmBng==
 
 "@types/codemirror@^0.0.69":
   version "0.0.69"
@@ -1594,16 +1594,17 @@ caseless@~0.12.0:
   resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
   integrity sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=
 
-chai@4.2.0:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/chai/-/chai-4.2.0.tgz#760aa72cf20e3795e84b12877ce0e83737aa29e5"
-  integrity sha512-XQU3bhBukrOsQCuwZndwGcCVQHyZi53fQ6Ys1Fym7E4olpIqqZZhhoFJoaKVvV17lWQoXYwgWN2nF5crA8J2jw==
+chai@4.3.8:
+  version "4.3.8"
+  resolved "https://registry.yarnpkg.com/chai/-/chai-4.3.8.tgz#40c59718ad6928da6629c70496fe990b2bb5b17c"
+  integrity sha512-vX4YvVVtxlfSZ2VecZgFUTU5qPCYsobVI2O9FmwEXBhDigYGQA6jRXCycIs1yJnnWbZ6/+a2zNIF5DfVCcJBFQ==
   dependencies:
     assertion-error "^1.1.0"
     check-error "^1.0.2"
-    deep-eql "^3.0.1"
+    deep-eql "^4.1.2"
     get-func-name "^2.0.0"
-    pathval "^1.1.0"
+    loupe "^2.3.1"
+    pathval "^1.1.1"
     type-detect "^4.0.5"
 
 chalk@^1.1.1, chalk@^1.1.3:
@@ -2175,10 +2176,10 @@ decode-uri-component@^0.2.0:
   resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
   integrity sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=
 
-deep-eql@^3.0.1:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/deep-eql/-/deep-eql-3.0.1.tgz#dfc9404400ad1c8fe023e7da1df1c147c4b444df"
-  integrity sha512-+QeIQyN5ZuO+3Uk5DYh6/1eKO0m0YmJFGNmFHGACpf1ClL1nmlV/p4gNgbl2pJGxgXb4faqo6UE+M5ACEMyVcw==
+deep-eql@^4.1.2:
+  version "4.1.3"
+  resolved "https://registry.yarnpkg.com/deep-eql/-/deep-eql-4.1.3.tgz#7c7775513092f7df98d8df9996dd085eb668cc6d"
+  integrity sha512-WaEtAOpRA1MQ0eohqZjpGD8zdI0Ovsm8mmFhaDN8dvDZzyoUMcYDnf5Y6iu7HTXxf8JDS23qWa4a+hKCDyOPzw==
   dependencies:
     type-detect "^4.0.0"
 
@@ -4818,6 +4819,13 @@ loud-rejection@^1.0.0:
     currently-unhandled "^0.4.1"
     signal-exit "^3.0.0"
 
+loupe@^2.3.1:
+  version "2.3.6"
+  resolved "https://registry.yarnpkg.com/loupe/-/loupe-2.3.6.tgz#76e4af498103c532d1ecc9be102036a21f787b53"
+  integrity sha512-RaPMZKiMy8/JruncMU5Bt6na1eftNoo++R4Y+N2FrxkDVTrGvcyzFTsaGif4QTeKESheMGegbhw6iUAq+5A8zA==
+  dependencies:
+    get-func-name "^2.0.0"
+
 lru-cache@^4.0.1, lru-cache@^4.1.1, lru-cache@^4.1.3:
   version "4.1.3"
   resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-4.1.3.tgz#a1175cf3496dfc8436c156c334b4955992bce69c"
@@ -5934,10 +5942,10 @@ path-type@^3.0.0:
   dependencies:
     pify "^3.0.0"
 
-pathval@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/pathval/-/pathval-1.1.0.tgz#b942e6d4bde653005ef6b71361def8727d0645e0"
-  integrity sha1-uULm1L3mUwBe9rcTYd74cn0GReA=
+pathval@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/pathval/-/pathval-1.1.1.tgz#8534e77a77ce7ac5a2512ea21e0fdb8fcf6c3d8d"
+  integrity sha512-Dp6zGqpTdETdR63lehJYPeIOqpiNBNtc7BpWSLrOje7UaIsE5aY92r/AunQA7rsXvet3lrJ3JnZX29UPTKXyKQ==
 
 pause-stream@^0.0.11:
   version "0.0.11"