diff --git a/Cargo.lock b/Cargo.lock
index 8dfd7ba1..72ef7ff0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -211,12 +211,6 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
-[[package]]
-name = "fast-float"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95765f67b4b18863968b4a1bd5bb576f732b29a4a28c7cd84c09fa3e2875f33c"
-
 [[package]]
 name = "fast_polynomial"
 version = "0.1.0"
@@ -517,7 +511,6 @@ name = "lox-io"
 version = "0.1.0-alpha.0"
 dependencies = [
  "csv",
- "fast-float",
  "lox-derive",
  "lox-math",
  "nom",
diff --git a/Cargo.toml b/Cargo.toml
index b5e4d18b..711d460d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,7 +24,6 @@ lox-time = { path = "crates/lox-time", version = "0.1.0-alpha.0" }
 csv = "1.3.0"
 divan = "0.1.14"
 dyn-clone = "1.0.17"
-fast-float = "0.2.0"
 fast_polynomial = "0.1.0"
 float_eq = "1.0.1"
 glam = "0.28.0"
diff --git a/crates/lox-io/Cargo.toml b/crates/lox-io/Cargo.toml
index 3d46c7c0..94dba76a 100644
--- a/crates/lox-io/Cargo.toml
+++ b/crates/lox-io/Cargo.toml
@@ -9,19 +9,17 @@ authors.workspace = true
 repository.workspace = true
 
 [dependencies]
+lox-derive.workspace = true
 lox-math.workspace = true
 
 csv.workspace = true
 nom.workspace = true
-serde.workspace = true
-thiserror.workspace = true
-
 quick-xml.workspace = true
-serde_json.workspace = true
-serde-aux.workspace = true
 regex.workspace = true
-fast-float.workspace = true
-lox-derive.workspace = true
+serde-aux.workspace = true
+serde.workspace = true
+serde_json.workspace = true
+thiserror.workspace = true
 
 [dev-dependencies]
 rstest.workspace = true
diff --git a/crates/lox-io/src/ndm/kvn/parser.rs b/crates/lox-io/src/ndm/kvn/parser.rs
index 939482ea..f53a3808 100644
--- a/crates/lox-io/src/ndm/kvn/parser.rs
+++ b/crates/lox-io/src/ndm/kvn/parser.rs
@@ -317,7 +317,9 @@ fn parse_kvn_covariance_matrix_line<'a, T: Iterator<Item = &'a str> + ?Sized>(
     let result: Result<Vec<f64>, _> = next_line
         .split_whitespace()
         .map(|matrix_element| {
-            fast_float::parse(matrix_element.trim())
+            matrix_element
+                .trim()
+                .parse::<f64>()
                 .map_err(|_| KvnCovarianceMatrixParserErr::InvalidFormat { input: next_line })
         })
         .collect();
@@ -558,8 +560,9 @@ pub fn parse_kvn_numeric_line(
     let value = captures.name("value").unwrap().as_str();
     let unit = captures.name("unit").map(|x| x.as_str().to_string());
 
-    let value =
-        fast_float::parse(value).map_err(|_| KvnNumberParserErr::InvalidFormat { input })?;
+    let value = value
+        .parse::<f64>()
+        .map_err(|_| KvnNumberParserErr::InvalidFormat { input })?;
 
     Ok(KvnValue { value, unit })
 }