diff --git a/java/src/main/rust/lib.rs b/java/src/main/rust/lib.rs
index d9f8207..5d03119 100644
--- a/java/src/main/rust/lib.rs
+++ b/java/src/main/rust/lib.rs
@@ -37,6 +37,9 @@ fn build_cfg(env: &JNIEnv, obj: &JObject) -> Cfg {
             .z()
             .unwrap(),
         minify_css: env.get_field(*obj, "minify_css", "Z").unwrap().z().unwrap(),
+        minify_css_level_1: env.get_field(*obj, "minify_css_level_1", "Z").unwrap().z().unwrap(),
+        minify_css_level_2: env.get_field(*obj, "minify_css_level_2", "Z").unwrap().z().unwrap(),
+        minify_css_level_3: env.get_field(*obj, "minify_css_level_3", "Z").unwrap().z().unwrap(),
         minify_js: env.get_field(*obj, "minify_js", "Z").unwrap().z().unwrap(),
         remove_bangs: env
             .get_field(*obj, "remove_bangs", "Z")
diff --git a/wasm/src/lib.rs b/wasm/src/lib.rs
index 1743f8a..88d0537 100644
--- a/wasm/src/lib.rs
+++ b/wasm/src/lib.rs
@@ -31,6 +31,9 @@ pub fn minify(code: &[u8], cfg: &JsValue) -> Vec<u8> {
         keep_spaces_between_attributes: get_prop!(cfg, "keep_spaces_between_attributes"),
         keep_comments: get_prop!(cfg, "keep_comments"),
         minify_css: get_prop!(cfg, "minify_css"),
+        minify_css_level_1: get_prop!(cfg, "minify_css_level_1"),
+        minify_css_level_2: get_prop!(cfg, "minify_css_level_2"),
+        minify_css_level_3: get_prop!(cfg, "minify_css_level_3"),
         minify_js: get_prop!(cfg, "minify_js"),
         remove_bangs: get_prop!(cfg, "remove_bangs"),
         remove_processing_instructions: get_prop!(cfg, "remove_processing_instructions"),