diff --git a/package-lock.json b/package-lock.json
index be0310d..e709cd5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4145,9 +4145,9 @@
       }
     },
     "node_modules/type-fest": {
-      "version": "4.3.1",
-      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-4.3.1.tgz",
-      "integrity": "sha512-pphNW/msgOUSkJbH58x8sqpq8uQj6b0ZKGxEsLKMUnGorRcDjrUaLS+39+/ub41JNTwrrMyJcUB8+YZs3mbwqw==",
+      "version": "4.8.1",
+      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-4.8.1.tgz",
+      "integrity": "sha512-ShaaYnjf+0etG8W/FumARKMjjIToy/haCaTjN2dvcewOSoNqCQzdgG7m2JVOlM5qndGTHjkvsrWZs+k/2Z7E0Q==",
       "engines": {
         "node": ">=16"
       },
@@ -4426,7 +4426,7 @@
       "license": "MIT",
       "dependencies": {
         "@openally/timestore": "^1.5.1",
-        "type-fest": "^4.3.1"
+        "type-fest": "^4.8.1"
       }
     },
     "src/error": {
@@ -5171,7 +5171,7 @@
       "version": "file:src/ephemeral-map",
       "requires": {
         "@openally/timestore": "^1.5.1",
-        "type-fest": "^4.3.1"
+        "type-fest": "^4.8.1"
       }
     },
     "@openally/mutex": {
@@ -7352,9 +7352,9 @@
       "dev": true
     },
     "type-fest": {
-      "version": "4.3.1",
-      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-4.3.1.tgz",
-      "integrity": "sha512-pphNW/msgOUSkJbH58x8sqpq8uQj6b0ZKGxEsLKMUnGorRcDjrUaLS+39+/ub41JNTwrrMyJcUB8+YZs3mbwqw=="
+      "version": "4.8.1",
+      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-4.8.1.tgz",
+      "integrity": "sha512-ShaaYnjf+0etG8W/FumARKMjjIToy/haCaTjN2dvcewOSoNqCQzdgG7m2JVOlM5qndGTHjkvsrWZs+k/2Z7E0Q=="
     },
     "typescript": {
       "version": "4.9.5",
diff --git a/src/ephemeral-map/package.json b/src/ephemeral-map/package.json
index 618e41e..1a76cb1 100644
--- a/src/ephemeral-map/package.json
+++ b/src/ephemeral-map/package.json
@@ -27,6 +27,6 @@
   "license": "MIT",
   "dependencies": {
     "@openally/timestore": "^1.5.1",
-    "type-fest": "^4.3.1"
+    "type-fest": "^4.8.1"
   }
 }