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index 4787588d..2ca07ed0 100644
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 [[package]]
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 [[package]]
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- "wasm-bindgen-macro 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "wasm-bindgen-macro",
 ]
 
 [[package]]
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- "wasm-bindgen-shared 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bumpalo",
+ "lazy_static",
+ "log",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.60"
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- "wasm-bindgen-macro-support 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote",
+ "wasm-bindgen-macro-support",
 ]
 
 [[package]]
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- "wasm-bindgen-shared 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
 ]
 
 [[package]]
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-version = "0.2.60"
+version = "0.2.64"
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+checksum = "7f7b90ea6c632dd06fd765d44542e234d5e63d9bb917ecd64d79778a13bd79ae"
 
 [[package]]
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- "typed-arena 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "adler32",
+ "byteorder",
+ "crc",
+ "typed-arena",
 ]
-
-[metadata]
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diff --git a/codecs/oxipng/Cargo.toml b/codecs/oxipng/Cargo.toml
index db0dc217..5701af5d 100644
--- a/codecs/oxipng/Cargo.toml
+++ b/codecs/oxipng/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-name = "oxipng"
+name = "squoosh-oxipng"
 version = "0.1.0"
 authors = ["Ingvar Stepanyan <me@rreverser.com>"]
 edition = "2018"
@@ -9,8 +9,8 @@ publish = false
 crate-type = ["cdylib"]
 
 [dependencies]
-oxipng = { version = "2.3.0", default-features = false }
-wasm-bindgen = "0.2.48"
+oxipng = { version = "3.0.0", default-features = false }
+wasm-bindgen = "0.2.64"
 log = { version = "0.4", features = ["release_max_level_off"] }
 
 [profile.release]
diff --git a/codecs/oxipng/Dockerfile b/codecs/oxipng/Dockerfile
index 41029b7b..5448d170 100644
--- a/codecs/oxipng/Dockerfile
+++ b/codecs/oxipng/Dockerfile
@@ -3,10 +3,10 @@ RUN rustup target add wasm32-unknown-unknown
 RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
 
 RUN mkdir /opt/wabt && \
- curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.11/wabt-1.0.11-linux.tar.gz  | tar -xzf - -C /opt/wabt --strip 1
+  curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.17/wabt-1.0.17-ubuntu.tar.gz  | tar -xzf - -C /opt/wabt --strip 1
 
 RUN mkdir /opt/wasi-sdk && \
-  curl -L https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-8/wasi-sdk-8.0-linux.tar.gz | tar -xzf - -C /opt/wasi-sdk --strip 1
+  curl -L https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-11/wasi-sdk-11.0-linux.tar.gz | tar -xzf - -C /opt/wasi-sdk --strip 1
 
-ENV PATH="/opt/wabt:/opt/wasi-sdk/bin:${PATH}"
+ENV PATH="/opt/wabt/bin:/opt/wasi-sdk/bin:${PATH}"
 WORKDIR /src
diff --git a/codecs/oxipng/build.sh b/codecs/oxipng/build.sh
old mode 100644
new mode 100755
index 1e46f657..3b607ee7
--- a/codecs/oxipng/build.sh
+++ b/codecs/oxipng/build.sh
@@ -7,7 +7,7 @@ echo "Compiling wasm"
 echo "============================================="
 (
   wasm-pack build
-  wasm-strip pkg/oxipng_bg.wasm
+  wasm-strip pkg/squoosh_oxipng_bg.wasm
   rm pkg/.gitignore
 )
 echo "============================================="
diff --git a/codecs/oxipng/pkg/oxipng_bg.wasm b/codecs/oxipng/pkg/oxipng_bg.wasm
deleted file mode 100644
index d6d45940..00000000
Binary files a/codecs/oxipng/pkg/oxipng_bg.wasm and /dev/null differ
diff --git a/codecs/oxipng/pkg/package.json b/codecs/oxipng/pkg/package.json
index 5dd8df18..80ba0476 100644
--- a/codecs/oxipng/pkg/package.json
+++ b/codecs/oxipng/pkg/package.json
@@ -1,15 +1,15 @@
 {
-  "name": "oxipng",
+  "name": "squoosh-oxipng",
   "collaborators": [
     "Ingvar Stepanyan <me@rreverser.com>"
   ],
   "version": "0.1.0",
   "files": [
-    "oxipng_bg.wasm",
-    "oxipng.js",
-    "oxipng.d.ts"
+    "squoosh_oxipng_bg.wasm",
+    "squoosh_oxipng.js",
+    "squoosh_oxipng.d.ts"
   ],
-  "module": "oxipng.js",
-  "types": "oxipng.d.ts",
+  "module": "squoosh_oxipng.js",
+  "types": "squoosh_oxipng.d.ts",
   "sideEffects": false
 }
\ No newline at end of file
diff --git a/codecs/oxipng/pkg/oxipng.d.ts b/codecs/oxipng/pkg/squoosh_oxipng.d.ts
similarity index 60%
rename from codecs/oxipng/pkg/oxipng.d.ts
rename to codecs/oxipng/pkg/squoosh_oxipng.d.ts
index 104d8f4a..1c95bae4 100644
--- a/codecs/oxipng/pkg/oxipng.d.ts
+++ b/codecs/oxipng/pkg/squoosh_oxipng.d.ts
@@ -1,8 +1,8 @@
 /* tslint:disable */
 /* eslint-disable */
 /**
-* @param {Uint8Array} data 
-* @param {number} level 
-* @returns {Uint8Array} 
+* @param {Uint8Array} data
+* @param {number} level
+* @returns {Uint8Array}
 */
 export function optimise(data: Uint8Array, level: number): Uint8Array;
diff --git a/codecs/oxipng/pkg/squoosh_oxipng.js b/codecs/oxipng/pkg/squoosh_oxipng.js
new file mode 100644
index 00000000..24abe864
--- /dev/null
+++ b/codecs/oxipng/pkg/squoosh_oxipng.js
@@ -0,0 +1,2 @@
+import * as wasm from "./squoosh_oxipng_bg.wasm";
+export * from "./squoosh_oxipng_bg.js";
\ No newline at end of file
diff --git a/codecs/oxipng/pkg/oxipng_bg.d.ts b/codecs/oxipng/pkg/squoosh_oxipng_bg.d.ts
similarity index 100%
rename from codecs/oxipng/pkg/oxipng_bg.d.ts
rename to codecs/oxipng/pkg/squoosh_oxipng_bg.d.ts
diff --git a/codecs/oxipng/pkg/oxipng.js b/codecs/oxipng/pkg/squoosh_oxipng_bg.js
similarity index 90%
rename from codecs/oxipng/pkg/oxipng.js
rename to codecs/oxipng/pkg/squoosh_oxipng_bg.js
index cce9b303..87154f54 100644
--- a/codecs/oxipng/pkg/oxipng.js
+++ b/codecs/oxipng/pkg/squoosh_oxipng_bg.js
@@ -1,6 +1,6 @@
-import * as wasm from './oxipng_bg.wasm';
+import * as wasm from './squoosh_oxipng_bg.wasm';
 
-const lTextDecoder = typeof TextDecoder === 'undefined' ? require('util').TextDecoder : TextDecoder;
+const lTextDecoder = typeof TextDecoder === 'undefined' ? (0, module.require)('util').TextDecoder : TextDecoder;
 
 let cachedTextDecoder = new lTextDecoder('utf-8', { ignoreBOM: true, fatal: true });
 
diff --git a/codecs/oxipng/pkg/squoosh_oxipng_bg.wasm b/codecs/oxipng/pkg/squoosh_oxipng_bg.wasm
new file mode 100644
index 00000000..408eb08e
Binary files /dev/null and b/codecs/oxipng/pkg/squoosh_oxipng_bg.wasm differ
diff --git a/codecs/oxipng/src/lib.rs b/codecs/oxipng/src/lib.rs
index 60b64439..c4ead1d2 100644
--- a/codecs/oxipng/src/lib.rs
+++ b/codecs/oxipng/src/lib.rs
@@ -1,10 +1,18 @@
 mod malloc_shim;
 
 use wasm_bindgen::prelude::*;
+use oxipng::AlphaOptim;
 
 #[wasm_bindgen(catch)]
 pub fn optimise(data: &[u8], level: u8) -> Vec<u8> {
   let mut options = oxipng::Options::from_preset(level);
+  options.alphas.insert(AlphaOptim::Black);
+  options.alphas.insert(AlphaOptim::White);
+  options.alphas.insert(AlphaOptim::Up);
+  options.alphas.insert(AlphaOptim::Down);
+  options.alphas.insert(AlphaOptim::Left);
+  options.alphas.insert(AlphaOptim::Right);
+
   options.deflate = oxipng::Deflaters::Libdeflater;
   oxipng::optimize_from_memory(data, &options).unwrap_throw()
 }