diff --git a/Cargo.toml b/Cargo.toml
index 95c2690..7703d03 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,7 +4,7 @@ version = "0.5.0"
 edition = "2021"
 authors = ["NGnius (Graham) <ngniusness@gmail.com>"]
 description = "Music Playlist Script language (MPS)"
-license = "LGPL-2.1-only OR GPL-3.0"
+license = "LGPL-2.1-only OR GPL-3.0-only"
 repository = "https://github.com/NGnius/mps"
 keywords = ["audio", "playlist", "scripting", "language"]
 readme = "README.md"
diff --git a/README.md b/README.md
index 69675e1..51576c6 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ One day I'll add pretty REPL example pictures and some script files...
 
 ## License
 
-LGPL-2.1-only OR GPL-3.0
+LGPL-2.1-only OR GPL-3.0-only
 
 **NOTE**: When advanced features are enabled, GPL-3.0 must be used.
 
diff --git a/mps-interpreter/Cargo.toml b/mps-interpreter/Cargo.toml
index b2d903d..bc80be0 100644
--- a/mps-interpreter/Cargo.toml
+++ b/mps-interpreter/Cargo.toml
@@ -2,7 +2,7 @@
 name = "mps-interpreter"
 version = "0.5.0"
 edition = "2021"
-license = "LGPL-2.1-only OR GPL-2.0-or-later"
+license = "LGPL-2.1-only OR GPL-3.0-only"
 readme = "README.md"
 
 [dependencies]
diff --git a/mps-m3u8/Cargo.toml b/mps-m3u8/Cargo.toml
index 59d658c..9f03ea0 100644
--- a/mps-m3u8/Cargo.toml
+++ b/mps-m3u8/Cargo.toml
@@ -4,7 +4,7 @@ version = "0.5.0"
 edition = "2021"
 authors = ["NGnius <ngniusness@gmail.com>"]
 description = "Minimal playlist generator for MPS files"
-license = "LGPL-2.1-only OR GPL-2.0-or-later"
+license = "LGPL-2.1-only OR GPL-3.0-only"
 repository = "https://github.com/NGnius/mps"
 keywords = ["audio", "playlist", "scripting", "language"]
 readme = "README.md"
diff --git a/mps-player/Cargo.toml b/mps-player/Cargo.toml
index 0bf0678..0238ef4 100644
--- a/mps-player/Cargo.toml
+++ b/mps-player/Cargo.toml
@@ -2,7 +2,7 @@
 name = "mps-player"
 version = "0.5.0"
 edition = "2021"
-license = "LGPL-2.1-only OR GPL-2.0-or-later"
+license = "LGPL-2.1-only OR GPL-3.0-only"
 readme = "README.md"
 
 [dependencies]