diff --git a/nixos/modules/services/audio/music-assistant.nix b/nixos/modules/services/audio/music-assistant.nix
index c0aaacc756b6..cad8cc3f84d4 100644
--- a/nixos/modules/services/audio/music-assistant.nix
+++ b/nixos/modules/services/audio/music-assistant.nix
@@ -83,7 +83,18 @@ in
         lib.optional cfg.enable 8097 # Music Assistant stream port
         ++ lib.optional (lib.elem "airplay" cfg.providers) 7000
         ++ lib.optional (lib.elem "sendspin" cfg.providers) 8927
-        ++ lib.optional (lib.elem "snapcast" cfg.providers) 1780;
+        ++ lib.optional (lib.elem "snapcast" cfg.providers) 1780
+        ++ lib.optionals (lib.elem "squeezelite" cfg.providers) [
+          # https://lyrion.org/reference/slimproto-protocol/
+          3483 # Slimproto control
+          # https://lyrion.org/reference/cli/using-the-cli/
+          9000 # Slimproto JSON-RPC
+          9090 # Slimproto CLI
+        ];
+      allowedUDPPorts = lib.optionals (lib.elem "squeezelite" cfg.providers) [
+        # https://lyrion.org/reference/slimproto-protocol/
+        3483 # Slimproto discovery
+      ];
       # The information published by Apple 1 seem to not apply to libraop.
       # The closest we could find that represents the port range being used as observed by tcpdump is the ephemeral port range.
       # 1: https://support.apple.com/en-us/103229#:~:text=49152%E2%80%93-,65535,-TCP%2C%20UDP