diff --git a/Cargo.toml b/Cargo.toml
index f62d44c4..5096ffdf 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@ readme = "README.md"
 keywords = ["yaml", "serde"]
 
 [dependencies]
-dtoa = "1.0"
+ryu = "1.0"
 indexmap = "1.5"
 serde = "1.0.69"
 yaml-rust = "0.4.5"
diff --git a/src/ser.rs b/src/ser.rs
index 23acd412..b584f35a 100644
--- a/src/ser.rs
+++ b/src/ser.rs
@@ -518,7 +518,7 @@ impl ser::Serializer for SerializerToYaml {
             num::FpCategory::Infinite if v.is_sign_positive() => ".inf".into(),
             num::FpCategory::Infinite => "-.inf".into(),
             num::FpCategory::Nan => ".nan".into(),
-            _ => dtoa::Buffer::new().format_finite(v).into(),
+            _ => ryu::Buffer::new().format_finite(v).into(),
         }))
     }
 
@@ -527,7 +527,7 @@ impl ser::Serializer for SerializerToYaml {
             num::FpCategory::Infinite if v.is_sign_positive() => ".inf".into(),
             num::FpCategory::Infinite => "-.inf".into(),
             num::FpCategory::Nan => ".nan".into(),
-            _ => dtoa::Buffer::new().format_finite(v).into(),
+            _ => ryu::Buffer::new().format_finite(v).into(),
         }))
     }