diff --git a/src/graphmanager/node.rs b/src/graphmanager/node.rs
index 2c9a93d..c14fd97 100644
--- a/src/graphmanager/node.rs
+++ b/src/graphmanager/node.rs
@@ -31,7 +31,7 @@ pub enum NodeType {
 
 impl fmt::Display for NodeType {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "{:?}", self)
+        write!(f, "{self:?}")
     }
 }
 
@@ -311,7 +311,7 @@ impl Node {
         let mut description = String::from("");
         for (name, value) in self_.properties.borrow().iter() {
             if !self.hidden_property(name) {
-                let _ = write!(description, "{}:{}", name, value);
+                let _ = write!(description, "{name}:{value}");
                 description.push('\n');
             }
         }
diff --git a/src/graphmanager/port.rs b/src/graphmanager/port.rs
index 4c444ed..40b4c85 100644
--- a/src/graphmanager/port.rs
+++ b/src/graphmanager/port.rs
@@ -30,7 +30,7 @@ pub enum PortDirection {
 
 impl fmt::Display for PortDirection {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "{:?}", self)
+        write!(f, "{self:?}")
     }
 }
 
@@ -57,7 +57,7 @@ pub enum PortPresence {
 
 impl fmt::Display for PortPresence {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "{:?}", self)
+        write!(f, "{self:?}")
     }
 }