diff --git a/Cargo.toml b/Cargo.toml
index 2202b119..48dbb3d5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,6 +15,7 @@ version = "1.5.0-test.20230613"
 admin-app = { git = "https://github.com/Nitrokey/admin-app", tag = "v0.1.0-nitrokey.3" }
 ctap-types = { git = "https://github.com/Nitrokey/ctap-types", tag = "v0.1.2-nitrokey.1" }
 fido-authenticator = { git = "https://github.com/Nitrokey/fido-authenticator.git", tag = "v0.1.1-nitrokey.5" }
+flexiber = { git = "https://github.com/Nitrokey/flexiber", tag = "0.1.1.nitrokey" }
 lpc55-hal = { git = "https://github.com/Nitrokey/lpc55-hal", tag = "v0.3.0-nitrokey.2" }
 trussed = { git = "https://github.com/Nitrokey/trussed", tag = "v0.1.0-nitrokey.12" }