diff --git a/Cargo.toml b/Cargo.toml
index 118d8f871..05dfd5a2a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -68,7 +68,6 @@ unstable-zonetree = ["futures", "parking_lot", "serde", "tokio", "tracing"]
 
 [dev-dependencies]
 lazy_static        = { version = "1.4.0" }
-mock_instant = { version = "0.4.0" }
 rstest             = "0.19.0"
 rustls-pemfile     = { version = "2.1.2" }
 serde_test         = "1.0.130"