diff --git a/ntest_timeout/Cargo.toml b/ntest_timeout/Cargo.toml
index 3da24f2..3b39e2b 100644
--- a/ntest_timeout/Cargo.toml
+++ b/ntest_timeout/Cargo.toml
@@ -18,7 +18,7 @@ proc-macro = true
 [dependencies]
 quote = "1.0"
 proc-macro2 = "1.0"
-proc-macro-crate = ">=1.1,<=2"
+proc-macro-crate = ">=1.1,<=3"
 
 [dependencies.syn]
 version = "1.0"