diff --git a/crates/biome_js_analyze/src/lint/correctness/no_undeclared_dependencies.rs b/crates/biome_js_analyze/src/lint/correctness/no_undeclared_dependencies.rs
index 664771872446..6c91829cf5e3 100644
--- a/crates/biome_js_analyze/src/lint/correctness/no_undeclared_dependencies.rs
+++ b/crates/biome_js_analyze/src/lint/correctness/no_undeclared_dependencies.rs
@@ -82,7 +82,7 @@ declare_lint_rule! {
     }
 }
 
-#[derive(Clone, Debug, Default, serde::Deserialize, serde::Serialize)]
+#[derive(Clone, Debug, Default, serde::Deserialize)]
 enum DependencyAvailability {
     /// Dependencies are always available.
     #[default]
@@ -133,6 +133,19 @@ impl Deserializable for DependencyAvailability {
     }
 }
 
+impl serde::Serialize for DependencyAvailability {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: serde::Serializer,
+    {
+        match self {
+            Self::Available => true.serialize(serializer),
+            Self::Unavailable => false.serialize(serializer),
+            Self::FilesGlob(globs) => globs.serialize(serializer),
+        }
+    }
+}
+
 #[cfg(feature = "schemars")]
 impl schemars::JsonSchema for DependencyAvailability {
     fn schema_name() -> String {
diff --git a/packages/@biomejs/biome/configuration_schema.json b/packages/@biomejs/biome/configuration_schema.json
index ee64b93fee9c..fa471bff6f55 100644
--- a/packages/@biomejs/biome/configuration_schema.json
+++ b/packages/@biomejs/biome/configuration_schema.json
@@ -2107,17 +2107,17 @@
 			"properties": {
 				"devDependencies": {
 					"description": "If set to `false`, then the rule will show an error when `devDependencies` are imported. Defaults to `true`.",
-					"default": "Available",
+					"default": true,
 					"allOf": [{ "$ref": "#/definitions/DependencyAvailability" }]
 				},
 				"optionalDependencies": {
 					"description": "If set to `false`, then the rule will show an error when `optionalDependencies` are imported. Defaults to `true`.",
-					"default": "Available",
+					"default": true,
 					"allOf": [{ "$ref": "#/definitions/DependencyAvailability" }]
 				},
 				"peerDependencies": {
 					"description": "If set to `false`, then the rule will show an error when `peerDependencies` are imported. Defaults to `true`.",
-					"default": "Available",
+					"default": true,
 					"allOf": [{ "$ref": "#/definitions/DependencyAvailability" }]
 				}
 			},