diff --git a/functions/package-lock.json b/functions/package-lock.json
index 5f7d8409..59718175 100644
--- a/functions/package-lock.json
+++ b/functions/package-lock.json
@@ -205,12 +205,92 @@
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@@ -6813,6 +7151,12 @@
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@@ -9254,6 +9663,12 @@
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diff --git a/functions/package.json b/functions/package.json
index cc5f5259..60281440 100644
--- a/functions/package.json
+++ b/functions/package.json
@@ -22,7 +22,7 @@
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 		"@google-cloud/functions-emulator": "^1.0.0-beta.5",
 		"ava": "0.25.0",
-		"express": "^4.16.3",
+		"express": "^4.18.2",
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 		"semistandard": "^12.0.1",
 		"sinon": "4.4.8",