diff --git a/Cargo.toml b/Cargo.toml
index cadd750..d476879 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ documentation = "https://jordanbray.github.io/chess/chess/index.html"
 [dependencies]
 arrayvec = "0.5.1"
 nodrop = "0.1.14"
-failure = "0.1.6"
+thiserror = "2.0.12"
 tracing = { version = "0.1.37", optional = true }
 
 [features]
@@ -46,7 +46,7 @@ opt-level = 3
 
 [build-dependencies]
 rand = { version = "0.7.2", default_features = false, features = ["small_rng"] }
-failure = "0.1.6"
+thiserror = "2.0.12"
 
 [dev-dependencies]
 criterion = "0.3"
diff --git a/src/error.rs b/src/error.rs
index 185b83a..4a88c93 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -1,35 +1,35 @@
-use failure::Fail;
+use thiserror::Error;
 
 /// Sometimes, bad stuff happens.
-#[derive(Clone, Debug, Fail)]
+#[derive(Clone, Debug, Error)]
 pub enum Error {
     /// The FEN string is invalid
-    #[fail(display = "Invalid FEN string: {}", fen)]
+    #[error("Invalid FEN string: {fen}")]
     InvalidFen { fen: String },
 
     /// The board created from BoardBuilder was found to be invalid
-    #[fail(
-        display = "The board specified did not pass sanity checks.  Are you sure the kings exist and the side to move cannot capture the opposing king?"
+    #[error(
+        "The board specified did not pass sanity checks.  Are you sure the kings exist and the side to move cannot capture the opposing king?"
     )]
     InvalidBoard,
 
     /// An attempt was made to create a square from an invalid string
-    #[fail(display = "The string specified does not contain a valid algebraic notation square")]
+    #[error("The string specified does not contain a valid algebraic notation square")]
     InvalidSquare,
 
     /// An attempt was made to create a move from an invalid SAN string
-    #[fail(display = "The string specified does not contain a valid SAN notation move")]
+    #[error("The string specified does not contain a valid SAN notation move")]
     InvalidSanMove,
 
     /// An atempt was made to create a move from an invalid UCI string
-    #[fail(display = "The string specified does not contain a valid UCI notation move")]
+    #[error("The string specified does not contain a valid UCI notation move")]
     InvalidUciMove,
 
     /// An attempt was made to convert a string not equal to "1"-"8" to a rank
-    #[fail(display = "The string specified does not contain a valid rank")]
+    #[error("The string specified does not contain a valid rank")]
     InvalidRank,
 
     /// An attempt was made to convert a string not equal to "a"-"h" to a file
-    #[fail(display = "The string specified does not contain a valid file")]
+    #[error("The string specified does not contain a valid file")]
     InvalidFile,
 }