diff --git a/tools/sticker-picker/Cargo.toml b/tools/sticker-picker/Cargo.toml
index fdba8144..476ceea6 100644
--- a/tools/sticker-picker/Cargo.toml
+++ b/tools/sticker-picker/Cargo.toml
@@ -3,7 +3,7 @@ name = "poezio-sticker-picker"
 version = "0.1.0"
 edition = "2021"
 authors = ["Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>"]
-license = "Zlib"
+license = "GPL-3.0-or-later"
 description = "Helper tool for selecting a sticker inside a pack"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
diff --git a/tools/sticker-picker/src/main.rs b/tools/sticker-picker/src/main.rs
index 49795f4d..429043e3 100644
--- a/tools/sticker-picker/src/main.rs
+++ b/tools/sticker-picker/src/main.rs
@@ -1,7 +1,7 @@
 // This file is part of Poezio.
 //
 // Poezio is free software: you can redistribute it and/or modify
-// it under the terms of the zlib license. See the COPYING file.
+// it under the terms of the GPL-3.0-or-later license. See the COPYING file.
 
 mod sticker;
 
diff --git a/tools/sticker-picker/src/sticker.rs b/tools/sticker-picker/src/sticker.rs
index 7fb44e8e..309b21fa 100644
--- a/tools/sticker-picker/src/sticker.rs
+++ b/tools/sticker-picker/src/sticker.rs
@@ -1,7 +1,7 @@
 // This file is part of Poezio.
 //
 // Poezio is free software: you can redistribute it and/or modify
-// it under the terms of the zlib license. See the COPYING file.
+// it under the terms of the GPL-3.0-or-later license. See the COPYING file.
 
 use gtk::prelude::*;
 use gtk::subclass::prelude::*;