diff --git a/libafl/Cargo.toml b/libafl/Cargo.toml
index 42bb5ecf00..e1e45c9a1e 100644
--- a/libafl/Cargo.toml
+++ b/libafl/Cargo.toml
@@ -170,7 +170,7 @@ libm = "0.2.2"
 ratatui = { version = "0.23.0", default-features = false, features = ['crossterm'], optional = true } # Commandline rendering, for TUI Monitor
 crossterm = { version = "0.27.0", optional = true }
 
-prometheus-client = { version = "0.21", optional = true } # For the prometheus monitor
+prometheus-client = { version = "0.22", optional = true } # For the prometheus monitor
 tide = { version = "0.16.0", optional = true }
 async-std = { version = "1.12.0", features = ["attributes"], optional = true }
 futures = { version = "0.3.24", optional = true }