diff --git a/implementations/rust/src/value/value.rs b/implementations/rust/src/value/value.rs
index e4fb627..f2277f0 100644
--- a/implementations/rust/src/value/value.rs
+++ b/implementations/rust/src/value/value.rs
@@ -153,14 +153,14 @@ impl<N: NestedValue> From<bool> for Value<N> { fn from(v: bool) -> Self { Value:
 impl<N: NestedValue> From<f32> for Value<N> { fn from(v: f32) -> Self { Value::Float(Float::from(v)) } }
 impl<N: NestedValue> From<f64> for Value<N> { fn from(v: f64) -> Self { Value::Double(Double::from(v)) } }
 
-impl<N: NestedValue> From<u8> for Value<N> { fn from(v: u8) -> Self { Value::SignedInteger(BigInt::from(v)) } }
-impl<N: NestedValue> From<i8> for Value<N> { fn from(v: i8) -> Self { Value::SignedInteger(BigInt::from(v)) } }
-impl<N: NestedValue> From<u16> for Value<N> { fn from(v: u16) -> Self { Value::SignedInteger(BigInt::from(v)) } }
-impl<N: NestedValue> From<i16> for Value<N> { fn from(v: i16) -> Self { Value::SignedInteger(BigInt::from(v)) } }
-impl<N: NestedValue> From<u32> for Value<N> { fn from(v: u32) -> Self { Value::SignedInteger(BigInt::from(v)) } }
-impl<N: NestedValue> From<i32> for Value<N> { fn from(v: i32) -> Self { Value::SignedInteger(BigInt::from(v)) } }
-impl<N: NestedValue> From<u64> for Value<N> { fn from(v: u64) -> Self { Value::SignedInteger(BigInt::from(v)) } }
-impl<N: NestedValue> From<i64> for Value<N> { fn from(v: i64) -> Self { Value::SignedInteger(BigInt::from(v)) } }
+impl<N: NestedValue> From<u8> for Value<N> { fn from(v: u8) -> Self { Value::from(v as i128) } }
+impl<N: NestedValue> From<i8> for Value<N> { fn from(v: i8) -> Self { Value::from(v as i128) } }
+impl<N: NestedValue> From<u16> for Value<N> { fn from(v: u16) -> Self { Value::from(v as i128) } }
+impl<N: NestedValue> From<i16> for Value<N> { fn from(v: i16) -> Self { Value::from(v as i128) } }
+impl<N: NestedValue> From<u32> for Value<N> { fn from(v: u32) -> Self { Value::from(v as i128) } }
+impl<N: NestedValue> From<i32> for Value<N> { fn from(v: i32) -> Self { Value::from(v as i128) } }
+impl<N: NestedValue> From<u64> for Value<N> { fn from(v: u64) -> Self { Value::from(v as i128) } }
+impl<N: NestedValue> From<i64> for Value<N> { fn from(v: i64) -> Self { Value::from(v as i128) } }
 impl<N: NestedValue> From<u128> for Value<N> { fn from(v: u128) -> Self { Value::SignedInteger(BigInt::from(v)) } }
 impl<N: NestedValue> From<i128> for Value<N> { fn from(v: i128) -> Self { Value::SignedInteger(BigInt::from(v)) } }
 impl<N: NestedValue> From<BigInt> for Value<N> { fn from(v: BigInt) -> Self { Value::SignedInteger(v) } }