diff --git a/Cargo.toml b/Cargo.toml
index 744f157..1c7d4b6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,9 +21,9 @@ iter = []
 [dev-dependencies]
 assert-dbg = { path = "assert-dbg" }
 collection_literals = "1.0.1"
-derive_more = "0.99.17"
+derive_more = { version = "2.0.0", features = ["display"] }
 proptest = "1.1.0"
-proptest-derive = "0.3.0"
+proptest-derive = "0.6.0"
 quote = "1.0.23"
 trybuild2 = "1.0.0"
 
diff --git a/tests/test.rs b/tests/test.rs
index 6548a28..58c910d 100644
--- a/tests/test.rs
+++ b/tests/test.rs
@@ -15,11 +15,11 @@ use quote::{quote, ToTokens};
 #[derive(Debug, Arbitrary, Display, Clone)]
 #[allow(non_camel_case_types)]
 enum Alignment {
-    #[display(fmt = "<")]
+    #[display("<")]
     Left,
-    #[display(fmt = "^")]
+    #[display("^")]
     Center,
-    #[display(fmt = ">")]
+    #[display(">")]
     Right,
 }
 
@@ -27,13 +27,13 @@ enum Alignment {
 #[allow(non_camel_case_types)]
 enum Trait {
     #[default]
-    #[display(fmt = "")]
+    #[display("")]
     Display,
-    #[display(fmt = "?")]
+    #[display("?")]
     Question,
-    #[display(fmt = "x?")]
+    #[display("x?")]
     xQuestion,
-    #[display(fmt = "X?")]
+    #[display("X?")]
     XQuestion,
     x,
     X,
@@ -46,12 +46,12 @@ enum Trait {
 
 #[derive(Debug, Default, Arbitrary, Display)]
 enum Sign {
-    #[display(fmt = "+")]
+    #[display("+")]
     Plus,
-    #[display(fmt = "-")]
+    #[display("-")]
     Minus,
     #[default]
-    #[display(fmt = "")]
+    #[display("")]
     None,
 }