diff --git a/Cargo.lock b/Cargo.lock
index 6644a46..7c6b9c6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -345,9 +345,9 @@ checksum = "e88a8acf291dafb59c2d96e8f59828f3838bb1a70398823ade51a84de6a6deed"
 
 [[package]]
 name = "fltk"
-version = "1.2.7"
+version = "1.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0953c34fd5b0c6ac1b615fdcda8845c81ed364165b115ddac46ae8953d456640"
+checksum = "889d9b2176b88c6f8f90ba64b0b030e52807ed1d6e416df0c15611225b40cc1d"
 dependencies = [
  "bitflags",
  "fltk-sys",
@@ -356,9 +356,9 @@ dependencies = [
 
 [[package]]
 name = "fltk-sys"
-version = "1.2.7"
+version = "1.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2df700440c014123cc1644fbef7d33dcdda18cdd80373a7552a9d5cec47ca63"
+checksum = "e38b2f3fb23b4bd46fc492d5d8d099b0bf766a7ab5d18b8424d93089ae934a48"
 dependencies = [
  "cmake",
 ]
diff --git a/prototypes/ptth_quic_client_gui/Cargo.toml b/prototypes/ptth_quic_client_gui/Cargo.toml
index 23b6df2..b5f7b81 100644
--- a/prototypes/ptth_quic_client_gui/Cargo.toml
+++ b/prototypes/ptth_quic_client_gui/Cargo.toml
@@ -10,7 +10,7 @@ license = "AGPL-3.0"
 [dependencies]
 anyhow = "1.0.38"
 blake3 = "1.0.0"
-fltk = "1.2.7"
+fltk = "1.2.8"
 quic_demo = { path = "../quic_demo" }
 quinn = "0.7.2"
 rand = "0.8.4"