diff --git a/imagequant-sys/Cargo.toml b/imagequant-sys/Cargo.toml
index 6ea8c74..e4b2665 100644
--- a/imagequant-sys/Cargo.toml
+++ b/imagequant-sys/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "imagequant-sys"
-version = "4.0.3"
+version = "4.0.4"
 description = "Convert 24/32-bit images to 8-bit palette with alpha channel.\nC API/FFI libimagequant that powers pngquant lossy PNG compressor.\n\nDual-licensed like pngquant. See https://pngquant.org for details."
 authors = ["Kornel Lesiński <kornel@pngquant.org>"]
 license = "GPL-3.0-or-later"
@@ -29,7 +29,7 @@ libc = "0.2.112"
 
 [package.metadata.capi.library]
 name = "imagequant"
-version = "0.0.4"
+version = "0.4.0"
 
 [package.metadata.capi.pkg_config]
 name = "imagequant"