diff --git a/Cargo.lock b/Cargo.lock
index 544e8dc1..7c45dc2e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -120,12 +120,6 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
-[[package]]
-name = "base64"
-version = "0.21.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d297deb1925b89f2ccc13d7635fa0714f12c87adce1c75356b39ca9b7178567"
-
 [[package]]
 name = "base64"
 version = "0.22.1"
@@ -586,7 +580,7 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b3314d5adb5d94bcdf56771f2e50dbbc80bb4bdf88967526706205ac9eff24eb"
 dependencies = [
- "base64 0.22.1",
+ "base64",
  "bytes",
  "headers-core",
  "http",
@@ -679,7 +673,7 @@ version = "0.1.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3c6995591a8f1380fcb4ba966a252a4b29188d51d2b89e3a252f5305be65aea8"
 dependencies = [
- "base64 0.22.1",
+ "base64",
  "bytes",
  "futures-channel",
  "futures-core",
@@ -1299,7 +1293,7 @@ version = "0.12.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d429f34c8092b2d42c7c93cec323bb4adeb7c67698f70839adec842ec10c7ceb"
 dependencies = [
- "base64 0.22.1",
+ "base64",
  "bytes",
  "futures-core",
  "http",
@@ -1327,15 +1321,17 @@ dependencies = [
 
 [[package]]
 name = "ron"
-version = "0.8.1"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b91f7eff05f748767f183df4320a63d6936e9c6107d97c9e6bdd9784f4289c94"
+checksum = "fd490c5b18261893f14449cbd28cb9c0b637aebf161cd77900bfdedaff21ec32"
 dependencies = [
- "base64 0.21.7",
  "bitflags 2.9.4",
  "indexmap",
+ "once_cell",
  "serde",
  "serde_derive",
+ "typeid",
+ "unicode-ident",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index e3d5e981..ef580638 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -140,7 +140,7 @@ toml = { version = "0.9.6", optional = true, default-features = false, features
 serde_json = { version = "1.0.145", optional = true }
 yaml-rust2 = { version = "0.10.4", optional = true }
 rust-ini = { version = "0.21.3", optional = true }
-ron = { version = "0.8.1", optional = true }
+ron = { version = "0.12.0", optional = true }
 json5_rs = { version = "0.4.1", optional = true, package = "json5" }
 corn = { version = "0.10.0", optional = true, package = "libcorn" }
 indexmap = { version = "2.11.4", features = ["serde"], optional = true }
diff --git a/src/file/format/ron.rs b/src/file/format/ron.rs
index 2911a73c..7b4aeb6c 100644
--- a/src/file/format/ron.rs
+++ b/src/file/format/ron.rs
@@ -1,3 +1,4 @@
+use std::convert::TryInto as _;
 use std::error::Error;
 
 use crate::format;
@@ -27,14 +28,27 @@ fn from_ron_value(
         ron::Value::Bool(value) => ValueKind::Boolean(value),
 
         ron::Value::Number(value) => match value {
-            ron::Number::Float(value) => ValueKind::Float(value.get()),
-            ron::Number::Integer(value) => ValueKind::I64(value),
+            ron::Number::F32(value) => ValueKind::Float(value.get().into()),
+            ron::Number::F64(value) => ValueKind::Float(value.get()),
+            ron::Number::I8(value) => ValueKind::I64(value.into()),
+            ron::Number::I16(value) => ValueKind::I64(value.into()),
+            ron::Number::I32(value) => ValueKind::I64(value.into()),
+            ron::Number::I64(value) => ValueKind::I64(value),
+            ron::Number::U8(value) => ValueKind::I64(value.into()),
+            ron::Number::U16(value) => ValueKind::I64(value.into()),
+            ron::Number::U32(value) => ValueKind::I64(value.into()),
+            ron::Number::U64(value) => ValueKind::I64(value.try_into()?),
+            _ => Err(crate::ConfigError::Message(
+                "unsupported numeric type".to_owned(),
+            ))?,
         },
 
         ron::Value::Char(value) => ValueKind::String(value.to_string()),
 
         ron::Value::String(value) => ValueKind::String(value),
 
+        ron::Value::Bytes(_) => Err(crate::ConfigError::Message("unsupported bytes".to_owned()))?,
+
         ron::Value::Seq(values) => {
             let array = values
                 .into_iter()
diff --git a/tests/testsuite/file_ron.rs b/tests/testsuite/file_ron.rs
index d0e58686..e6376f40 100644
--- a/tests/testsuite/file_ron.rs
+++ b/tests/testsuite/file_ron.rs
@@ -115,7 +115,10 @@ fn test_error_parse() {
         .build();
 
     assert!(res.is_err());
-    assert_data_eq!(res.unwrap_err().to_string(), str!["5:1: Expected colon"]);
+    assert_data_eq!(
+        res.unwrap_err().to_string(),
+        str!["4:8-5:1: Expected colon"]
+    );
 }
 
 #[test]