diff --git a/Cargo.lock b/Cargo.lock
index 728639d..e60f010 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -141,12 +141,6 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
-[[package]]
-name = "convert_case"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6245d59a3e82a7fc217c5828a6692dbc6dfb63a0c8c90495621f7b9d79704a0e"
-
 [[package]]
 name = "core-foundation"
 version = "0.9.4"
@@ -186,15 +180,23 @@ dependencies = [
 
 [[package]]
 name = "derive_more"
-version = "0.99.18"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a9b99b9cbbe49445b21764dc0625032a89b145a2642e67603e1c936f5458d05"
+dependencies = [
+ "derive_more-impl",
+]
+
+[[package]]
+name = "derive_more-impl"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f33878137e4dafd7fa914ad4e259e18a4e8e532b9617a2d0150262bf53abfce"
+checksum = "cb7330aeadfbe296029522e6c40f315320aba36fc43a5b3632f3795348f3bd22"
 dependencies = [
- "convert_case",
  "proc-macro2",
  "quote",
- "rustc_version",
  "syn",
+ "unicode-xid",
 ]
 
 [[package]]
@@ -1042,15 +1044,6 @@ version = "0.1.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "719b953e2095829ee67db738b3bfa9fa368c94900df327b3f07fe6e794d2fe1f"
 
-[[package]]
-name = "rustc_version"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bfa0f585226d2e68097d4f95d113b15b83a82e819ab25717ec0590d9584ef366"
-dependencies = [
- "semver",
-]
-
 [[package]]
 name = "rustix"
 version = "0.38.34"
@@ -1562,6 +1555,12 @@ version = "0.1.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0336d538f7abc86d282a4189614dfaa90810dfc2c6f6427eaf88e16311dd225d"
 
+[[package]]
+name = "unicode-xid"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f962df74c8c05a667b5ee8bcf162993134c104e96440b663c8daa176dc772d8c"
+
 [[package]]
 name = "untrusted"
 version = "0.9.0"
diff --git a/Cargo.toml b/Cargo.toml
index fbb0fc5..af061b7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,7 +17,7 @@ conformance = ["validation", "reqwest", "prettytable-rs", "colored"]
 
 [dependencies]
 bytes = "1.7"
-derive_more = "0.99"
+derive_more = { version = "1", features = ["display", "error", "from"] }
 futures-util = "0.3"
 http = "1"
 log = "0.4"
diff --git a/src/conformance/operation.rs b/src/conformance/operation.rs
index f5134ac..0364cf4 100644
--- a/src/conformance/operation.rs
+++ b/src/conformance/operation.rs
@@ -1,4 +1,4 @@
-use derive_more::Display;
+use derive_more::derive::Display;
 use http::Method;
 use log::debug;
 
@@ -6,10 +6,10 @@ use crate::{spec::Operation, validation::Error as ValidationError, Spec};
 
 #[derive(Debug, Clone, Display)]
 pub enum OperationSpec {
-    #[display(fmt = "{} {}", method, path)]
+    #[display("{} {}", method, path)]
     Parts { method: Method, path: String },
 
-    #[display(fmt = "OpID: {}", _0)]
+    #[display("OpID: {}", _0)]
     OperationId(String),
 }
 
diff --git a/src/error.rs b/src/error.rs
index 9d66a52..497e45a 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -2,7 +2,7 @@
 
 use std::io;
 
-use derive_more::{Display, Error, From};
+use derive_more::derive::{Display, Error, From};
 
 use crate::spec::Error as SpecError;
 #[cfg(feature = "validation")]
@@ -11,23 +11,23 @@ use crate::validation::Error as ValidationError;
 /// Top-level errors.
 #[derive(Debug, Display, Error, From)]
 pub enum Error {
-    #[display(fmt = "I/O error")]
+    #[display("I/O error")]
     Io(io::Error),
 
-    #[display(fmt = "YAML error")]
+    #[display("YAML error")]
     Yaml(serde_yml::Error),
 
-    #[display(fmt = "JSON error")]
+    #[display("JSON error")]
     Serialize(serde_json::Error),
 
-    #[display(fmt = "Spec error")]
+    #[display("Spec error")]
     Spec(SpecError),
 
     #[cfg(feature = "validation")]
-    #[display(fmt = "Validation error")]
+    #[display("Validation error")]
     Validation(ValidationError),
 
     #[cfg(feature = "conformance")]
-    #[display(fmt = "Reqwest error")]
+    #[display("Reqwest error")]
     Reqwest(reqwest::Error),
 }
diff --git a/src/spec/error.rs b/src/spec/error.rs
index a0190a5..2f8da8d 100644
--- a/src/spec/error.rs
+++ b/src/spec/error.rs
@@ -1,4 +1,4 @@
-use derive_more::{Display, Error, From};
+use derive_more::derive::{Display, Error, From};
 use semver::{Error as SemVerError, Version};
 
 use crate::spec::{r#ref::RefError, schema::Error as SchemaError};
@@ -6,15 +6,15 @@ use crate::spec::{r#ref::RefError, schema::Error as SchemaError};
 /// Spec Errors
 #[derive(Debug, Display, Error, From)]
 pub enum Error {
-    #[display(fmt = "Reference error")]
+    #[display("Reference error")]
     Ref(RefError),
 
-    #[display(fmt = "Schema error")]
+    #[display("Schema error")]
     Schema(SchemaError),
 
-    #[display(fmt = "Semver error")]
+    #[display("Semver error")]
     SemVerError(SemVerError),
 
-    #[display(fmt = "Unsupported spec file version ({})", _0)]
+    #[display("Unsupported spec file version ({})", _0)]
     UnsupportedSpecFileVersion(#[error(not(source))] Version),
 }
diff --git a/src/spec/mod.rs b/src/spec/mod.rs
index 1c379f3..61b7758 100644
--- a/src/spec/mod.rs
+++ b/src/spec/mod.rs
@@ -4,7 +4,7 @@
 
 use std::{collections::BTreeMap, iter::Iterator};
 
-use derive_more::Error;
+use derive_more::derive::Error;
 use http::Method;
 use log::debug;
 use serde::{Deserialize, Serialize};
diff --git a/src/spec/ref.rs b/src/spec/ref.rs
index 010b2a1..d110c26 100644
--- a/src/spec/ref.rs
+++ b/src/spec/ref.rs
@@ -1,6 +1,6 @@
 use std::str::FromStr;
 
-use derive_more::{Display, Error};
+use derive_more::derive::{Display, Error};
 use log::trace;
 use once_cell::sync::Lazy;
 use regex::Regex;
@@ -36,14 +36,14 @@ where
 
 #[derive(Clone, Debug, PartialEq, Display, Error)]
 pub enum RefError {
-    #[display(fmt = "Invalid type: {}", _0)]
+    #[display("Invalid type: {}", _0)]
     InvalidType(#[error(not(source))] String),
 
-    #[display(fmt = "Mismatched type: cannot reference a {} as a {}", _0, _1)]
+    #[display("Mismatched type: cannot reference a {} as a {}", _0, _1)]
     MismatchedType(RefType, RefType),
 
     // TODO: use some kind of path structure
-    #[display(fmt = "Unresolvable path: {}", _0)]
+    #[display("Unresolvable path: {}", _0)]
     Unresolvable(#[error(not(source))] String),
 }
 
diff --git a/src/spec/schema.rs b/src/spec/schema.rs
index 2a253db..e605458 100644
--- a/src/spec/schema.rs
+++ b/src/spec/schema.rs
@@ -2,7 +2,7 @@
 
 use std::collections::BTreeMap;
 
-use derive_more::{Display, Error};
+use derive_more::derive::{Display, Error};
 use serde::{Deserialize, Serialize};
 
 use crate::spec::{FromRef, ObjectOrReference, Ref, RefError, RefType, Spec};
@@ -10,13 +10,13 @@ use crate::spec::{FromRef, ObjectOrReference, Ref, RefError, RefType, Spec};
 /// Schema Errors
 #[derive(Debug, Clone, PartialEq, Display, Error)]
 pub enum Error {
-    #[display(fmt = "Missing type property")]
+    #[display("Missing type property")]
     NoType,
 
-    #[display(fmt = "Unknown type: {}", _0)]
+    #[display("Unknown type: {}", _0)]
     UnknownType(#[error(not(source))] String),
 
-    #[display(fmt = "Required fields specified on a non-object schema")]
+    #[display("Required fields specified on a non-object schema")]
     RequiredSpecifiedOnNonObject,
 }
 
diff --git a/src/validation/error.rs b/src/validation/error.rs
index b2b0c8e..896e29b 100644
--- a/src/validation/error.rs
+++ b/src/validation/error.rs
@@ -1,6 +1,6 @@
 use std::fmt;
 
-use derive_more::{Display, Error};
+use derive_more::derive::{Display, Error};
 use http::{Method, StatusCode};
 use serde_json::Value as JsonValue;
 
@@ -45,45 +45,45 @@ pub enum Error {
     //
     // Wrapped Errors
     //
-    #[display(fmt = "Schema error")]
+    #[display("Schema error")]
     Schema(SchemaError),
 
     //
     // Leaf Errors
     //
-    #[display(fmt = "Not JSON")]
+    #[display("Not JSON")]
     NotJson,
 
-    #[display(fmt = "{} is not one of {:?}", _0, _1)]
+    #[display("{} is not one of {:?}", _0, _1)]
     TypeMismatch(Path, SchemaTypeSet),
 
-    #[display(fmt = "Array item type mismatch: {}", _0)]
+    #[display("Array item type mismatch: {}", _0)]
     ArrayItemTypeMismatch(JsonValue, #[error(source)] Box<Error>),
 
-    #[display(fmt = "Undocumented field: {}", _0)]
+    #[display("Undocumented field: {}", _0)]
     UndocumentedField(#[error(not(source))] String),
 
-    #[display(fmt = "Status mismatch: expected {}; got {}", _0, _1)]
+    #[display("Status mismatch: expected {}; got {}", _0, _1)]
     StatusMismatch(StatusCode, StatusCode),
 
-    #[display(fmt = "Required field missing: {}", _0)]
+    #[display("Required field missing: {}", _0)]
     RequiredFieldMissing(#[error(not(source))] Path),
 
-    #[display(fmt = "Type did not match any `anyOf` variant: {}\n{}", _0, _1)]
+    #[display("Type did not match any `anyOf` variant: {}\n{}", _0, _1)]
     OneOfNoMatch(Path, AggregateError),
 
-    #[display(fmt = "Non-nullable field was null: {}", _0)]
+    #[display("Non-nullable field was null: {}", _0)]
     InvalidNull(#[error(not(source))] Path),
 
-    #[display(fmt = "Operation not found: {} {}", _0, _1)]
+    #[display("Operation not found: {} {}", _0, _1)]
     OperationNotFound(Method, String),
 
-    #[display(fmt = "Operation ID not found: {}", _0)]
+    #[display("Operation ID not found: {}", _0)]
     OperationIdNotFound(#[error(not(source))] String),
 
-    #[display(fmt = "Parameter not found: {}", _0)]
+    #[display("Parameter not found: {}", _0)]
     ParameterNotFound(#[error(not(source))] String),
 
-    #[display(fmt = "Invalid parameter location: {}", _0)]
+    #[display("Invalid parameter location: {}", _0)]
     InvalidParameterLocation(#[error(not(source))] String),
 }