diff --git a/poem-openapi/Cargo.toml b/poem-openapi/Cargo.toml
index 352ebd23f7..a1abd1eb20 100644
--- a/poem-openapi/Cargo.toml
+++ b/poem-openapi/Cargo.toml
@@ -31,7 +31,7 @@ poem = { path = "../poem", version = "1.3.36", features = [
 
 tokio = { version = "1.17.0", features = ["fs"] }
 serde_json = "1.0.68"
-serde_yaml = "0.8.24"
+serde_yaml = "0.9.0"
 serde_urlencoded = "0.7.1"
 base64 = "0.13.0"
 serde = { version = "1.0.130", features = ["derive"] }