diff --git a/Cargo.toml b/Cargo.toml
index fd43a15..ed6e00f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ license = "Apache-2.0"
 
 [dependencies]
 mozjpeg = "0.9.1"
-mozjpeg-sys = "1.0.0"
+mozjpeg-sys = "1.0.1"
 oxipng = "5.0"
 libc = "0.2.76"
 wasm-bindgen = "0.2"
diff --git a/src/png.rs b/src/png.rs
index 243aa97..b28ae09 100644
--- a/src/png.rs
+++ b/src/png.rs
@@ -20,6 +20,7 @@ pub fn compress(input_path: String, output_path: String, parameters: CSParameter
     if parameters.optimize && parameters.png.force_zopfli {
         oxipng_options.deflate = oxipng::Deflaters::Zopfli;
     } else {
+        oxipng_options.deflate = oxipng::Deflaters::Libdeflater;
         let mut preset = parameters.png.level - 1;
         if parameters.optimize {
            preset = 6;