diff --git a/package.json b/package.json
index 7f37a8c..a307f6d 100644
--- a/package.json
+++ b/package.json
@@ -108,7 +108,7 @@
         "prettier": "^2.7.1",
         "time-grunt": "^2.0.0",
         "ts-jest": "^28.0.8",
-        "typescript": "^4.7.4",
+        "typescript": "^4.8.2",
         "yarn-audit-fix": "^9.3.5"
     },
     "resolutions": {
diff --git a/server/shared/types/index.ts b/server/shared/types/index.ts
index 5fb3c06..80e17b1 100644
--- a/server/shared/types/index.ts
+++ b/server/shared/types/index.ts
@@ -144,7 +144,9 @@ export function toIsArray<T>(isT: TypeGuard<T>): TypeGuard<T[]> {
     return (arg): arg is T[] => isArray(arg, isT);
 }
 
-export function toIsEnum<E>(enumDef: E): EnumTypeGuard<E> {
+export function toIsEnum<E extends Record<keyof E, ValueOf<E>>>(
+    enumDef: E
+): EnumTypeGuard<E> {
     return (arg): arg is ValueOf<E> =>
         Object.values(enumDef).includes(arg as [keyof E]);
 }
diff --git a/yarn.lock b/yarn.lock
index a6c7056..96f09ad 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7343,10 +7343,10 @@ type-is@~1.6.18:
     media-typer "0.3.0"
     mime-types "~2.1.24"
 
-typescript@^4.7.4:
-  version "4.7.4"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.7.4.tgz#1a88596d1cf47d59507a1bcdfb5b9dfe4d488235"
-  integrity sha512-C0WQT0gezHuw6AdY1M2jxUO83Rjf0HP7Sk1DtXj6j1EwkQNZrHAg2XPWlq62oqEhYvONq5pkC2Y9oPljWToLmQ==
+typescript@^4.8.2:
+  version "4.8.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.8.2.tgz#e3b33d5ccfb5914e4eeab6699cf208adee3fd790"
+  integrity sha512-C0I1UsrrDHo2fYI5oaCGbSejwX4ch+9Y5jTQELvovfmFkK3HHSZJB8MSJcWLmCUBzQBchCrZ9rMRV6GuNrvGtw==
 
 typical@^4.0.0:
   version "4.0.0"