diff --git a/Cargo.toml b/Cargo.toml
index a7e11d1df8..65ea961db7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 members = [
     "poem-derive",
     "poem",
diff --git a/poem-openapi/src/base.rs b/poem-openapi/src/base.rs
index d201d7db33..78979a815b 100644
--- a/poem-openapi/src/base.rs
+++ b/poem-openapi/src/base.rs
@@ -43,7 +43,7 @@ impl Deref for UrlQuery {
 
 impl UrlQuery {
     /// Returns all values with the specified name.
-    pub fn get_all<'a>(&'a self, name: &'a str) -> impl Iterator<Item = &'a String> + 'a {
+    pub fn get_all<'a, 'b: 'a>(&'b self, name: &'a str) -> impl Iterator<Item = &'b String> + 'a {
         self.0
             .iter()
             .filter(move |(n, _)| n == name)
@@ -51,7 +51,7 @@ impl UrlQuery {
     }
 
     /// Returns the first value with the specified name.
-    pub fn get(&self, name: &str) -> Option<&String> {
+    pub fn get(&self, name: &str) -> Option<&str> {
         self.get_all(name).next()
     }
 }