diff --git a/crates/libtest2-harness/Cargo.toml b/crates/libtest2-harness/Cargo.toml
index f024c08..2914642 100644
--- a/crates/libtest2-harness/Cargo.toml
+++ b/crates/libtest2-harness/Cargo.toml
@@ -32,7 +32,7 @@ threads = []
 lexarg-parser = { version = "0.0.2", path = "../lexarg-parser" }
 lexarg-error = { version = "0.0.2", path = "../lexarg-error" }
 libtest-lexarg = { version = "0.0.3", path = "../libtest-lexarg" }
-anstream = { version = "0.6.4", optional = true }
+anstream = { version = "1.0.0", optional = true }
 anstyle = { version = "1.0.10", optional = true }
 libtest-json = { version = "0.0.2", path = "../libtest-json", features = ["json"] }