diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 60d6cf3..88f34d8 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -70,7 +70,7 @@ security-framework-sys = "2.15"
 
 [dev-dependencies]
 tempfile = "3"
-base64 = "0.22"  # license_signing tests construct Ed25519 PEMs manually (issue #22)
+base64 = "0.23"  # license_signing tests construct Ed25519 PEMs manually (issue #22)
 # #112 egress-audit seam tests: mock AppHandle + local one-shot SSE server.
 # Dev-only feature unification — release builds keep tauri features = [].
 tauri = { version = "2", features = ["test"] }