diff --git a/Cargo.toml b/Cargo.toml
index a8ed1131..acab4885 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,7 +14,7 @@ anyhow = "1.0"
 cssparser = "0.28"
 napi = "1"
 napi-derive = "1"
-once_cell = "1.5"
+once_cell = "1.8"
 regex = "1.4"
 thiserror = "1.0"