6 files changed, 6 insertions, 6 deletions
diff --git a/src/entities/character.rs b/src/entities/character.rs
index 2b1b6efe47de..360478e8be1c 100644
--- a/src/entities/character.rs
+++ b/src/entities/character.rs
@@ -42,7 +42,7 @@ impl Character {
 }
 
 impl display::Draw for Character {
-    fn do_draw(&self, out: &mut Write) -> io::Result<()> {
+    fn do_draw(&self, out: &mut dyn Write) -> io::Result<()> {
         write!(out, "@")
     }
 }
diff --git a/src/entities/creature.rs b/src/entities/creature.rs
index 87ffda161e1c..20071c1d88eb 100644
--- a/src/entities/creature.rs
+++ b/src/entities/creature.rs
@@ -57,7 +57,7 @@ impl Describe for Creature {
 }
 
 impl display::Draw for Creature {
-    fn do_draw(&self, out: &mut Write) -> io::Result<()> {
+    fn do_draw(&self, out: &mut dyn Write) -> io::Result<()> {
         write!(out, "{}", self.typ.chr)
     }
 }
diff --git a/src/entities/entity.rs b/src/entities/entity.rs
index e43175931b68..01075d298f81 100644
--- a/src/entities/entity.rs
+++ b/src/entities/entity.rs
@@ -103,7 +103,7 @@ impl_downcast!(Entity);
 impl DrawWithNeighbors for Box<dyn Entity> {
     fn do_draw_with_neighbors<'a, 'b>(
         &'a self,
-        out: &'b mut Write,
+        out: &'b mut dyn Write,
         neighbors: &'a Neighbors<Vec<&'a Box<dyn Entity>>>,
     ) -> io::Result<()> {
         (**self).do_draw_with_neighbors(out, neighbors)
diff --git a/src/entities/entity_char.rs b/src/entities/entity_char.rs
index 2f845820021e..88ca8a55a823 100644
--- a/src/entities/entity_char.rs
+++ b/src/entities/entity_char.rs
@@ -12,7 +12,7 @@ pub struct EntityChar {
 }
 
 impl Display for EntityChar {
-    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
         write!(
             f,
             "{}{}{}",
diff --git a/src/entities/environment.rs b/src/entities/environment.rs
index 042873ec5a12..8f8a56706287 100644
--- a/src/entities/environment.rs
+++ b/src/entities/environment.rs
@@ -21,7 +21,7 @@ impl Wall {
 impl display::DrawWithNeighbors for Wall {
     fn do_draw_with_neighbors<'a, 'b>(
         &'a self,
-        out: &'b mut Write,
+        out: &'b mut dyn Write,
         neighbors: &'a Neighbors<Vec<&'a Box<dyn Entity>>>,
     ) -> io::Result<()> {
         let neighbor_styles: Neighbors<Option<BoxStyle>> =
diff --git a/src/entities/item.rs b/src/entities/item.rs
index 6e47a87f5b83..aa99fb42e2c1 100644
--- a/src/entities/item.rs
+++ b/src/entities/item.rs
@@ -44,7 +44,7 @@ impl Describe for Item {
 }
 
 impl display::Draw for Item {
-    fn do_draw(&self, out: &mut Write) -> io::Result<()> {
+    fn do_draw(&self, out: &mut dyn Write) -> io::Result<()> {
         write!(out, "{}", self.typ.chr)
     }
 }