diff --git a/crates/ptth_quic_client_gui/Cargo.toml b/crates/ptth_quic_client_gui/Cargo.toml
index 2d73e6a..5e83cb3 100644
--- a/crates/ptth_quic_client_gui/Cargo.toml
+++ b/crates/ptth_quic_client_gui/Cargo.toml
@@ -10,7 +10,7 @@ license = "AGPL-3.0"
 [dependencies]
 anyhow = "1.0.38"
 blake3 = "1.0.0"
-fltk = "1.2.8"
+fltk = "1.3.24"
 ptth_quic = { path = "../ptth_quic" }
 quinn = "0.9.3"
 rand = "0.8.4"