diff --git a/xtask/Cargo.toml b/xtask/Cargo.toml
index 73047eef..0abe8e19 100644
--- a/xtask/Cargo.toml
+++ b/xtask/Cargo.toml
@@ -10,6 +10,6 @@ name = "ci"
 harness = false
 
 [dependencies]
-ar = "0.8.0"
+ar = "0.9.0"
 cortex-m = { path = "../cortex-m", features = ["serde", "std"] }
 serde_json = "1"