diff --git a/package.json b/package.json
index 965321a..e9f00d1 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "node": ">=12"
   },
   "dependencies": {
-    "postcss-values-parser": "6.0.0"
+    "postcss-values-parser": "6.0.1"
   },
   "peerDependencies": {
     "postcss": "^8.3"
diff --git a/test/basic.css b/test/basic.css
index 5199c9f..e044c62 100644
--- a/test/basic.css
+++ b/test/basic.css
@@ -8,3 +8,9 @@ body {
 		order: 2;
 	}
 }
+
+@media (width > env(--another-custom-width)) {
+	body {
+		order: 3;
+	}
+}
diff --git a/test/basic.expect.css b/test/basic.expect.css
index 5199c9f..e044c62 100644
--- a/test/basic.expect.css
+++ b/test/basic.expect.css
@@ -8,3 +8,9 @@ body {
 		order: 2;
 	}
 }
+
+@media (width > env(--another-custom-width)) {
+	body {
+		order: 3;
+	}
+}
diff --git a/test/basic.import-is-empty.expect.css b/test/basic.import-is-empty.expect.css
index 5199c9f..e044c62 100644
--- a/test/basic.import-is-empty.expect.css
+++ b/test/basic.import-is-empty.expect.css
@@ -8,3 +8,9 @@ body {
 		order: 2;
 	}
 }
+
+@media (width > env(--another-custom-width)) {
+	body {
+		order: 3;
+	}
+}
diff --git a/test/basic.import.expect.css b/test/basic.import.expect.css
index 762c0d0..9491cec 100644
--- a/test/basic.import.expect.css
+++ b/test/basic.import.expect.css
@@ -8,3 +8,9 @@ body {
 		order: 2;
 	}
 }
+
+@media (width > 600px) {
+	body {
+		order: 3;
+	}
+}