diff --git a/Cargo.toml b/Cargo.toml
index 31420a2..90c6bfb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,6 +18,7 @@ bench = false
 
 [dependencies]
 num-traits = "0.2"
+fast-float = "0.2"
 
 [dev-dependencies]
 pretty_assertions = "^1"
diff --git a/src/types/extended_float/impl_conversions.rs b/src/types/extended_float/impl_conversions.rs
index 262de61..b3bc5a1 100644
--- a/src/types/extended_float/impl_conversions.rs
+++ b/src/types/extended_float/impl_conversions.rs
@@ -40,11 +40,11 @@ pub enum FromStrError {
     Invalid,
 }
 
-impl<T: DisplayableFloat + FromStr> FromStr for ExtendedFloat<T> {
+impl<T: DisplayableFloat + FromStr + fast_float::FastFloat> FromStr for ExtendedFloat<T> {
     type Err = FromStrError;
 
     fn from_str(s: &str) -> Result<Self, Self::Err> {
-        let v: T = s.parse().map_err(|_| FromStrError::Invalid)?;
+        let v: T = fast_float::parse(s).map_err(|_| FromStrError::Invalid)?;
         ExtendedFloat::try_from_value(v).map_err(|_| FromStrError::Invalid)
     }
 }