diff --git a/crates/starknet-types-core/Cargo.toml b/crates/starknet-types-core/Cargo.toml
index f603f359..ee3dc798 100644
--- a/crates/starknet-types-core/Cargo.toml
+++ b/crates/starknet-types-core/Cargo.toml
@@ -15,7 +15,6 @@ lambdaworks-math = { version = "0.10.0", default-features = false }
 num-traits = { version = "0.2", default-features = false }
 num-bigint = { version = "0.4", default-features = false }
 num-integer = { version = "0.1", default-features = false }
-size-of = { version = "0.1.5", default-features = false }
 
 # Optional
 arbitrary = { version = "1.3", optional = true }
diff --git a/crates/starknet-types-core/src/felt/mod.rs b/crates/starknet-types-core/src/felt/mod.rs
index fa0b39a5..fc4fe41f 100644
--- a/crates/starknet-types-core/src/felt/mod.rs
+++ b/crates/starknet-types-core/src/felt/mod.rs
@@ -31,7 +31,6 @@ use core::str::FromStr;
 use num_bigint::{BigInt, BigUint, Sign};
 use num_integer::Integer;
 use num_traits::{One, Zero};
-use size_of::SizeOf;
 
 #[cfg(feature = "alloc")]
 pub extern crate alloc;
@@ -49,10 +48,6 @@ use lambdaworks_math::{
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub struct Felt(pub(crate) FieldElement<Stark252PrimeField>);
 
-impl SizeOf for Felt {
-    fn size_of_children(&self, _context: &mut size_of::Context) {}
-}
-
 #[derive(Debug)]
 pub struct FromStrError(CreationError);
 
@@ -796,7 +791,6 @@ mod test {
     use num_traits::Num;
     use proptest::prelude::*;
     use regex::Regex;
-    use size_of::TotalSize;
 
     #[test]
     fn test_debug_format() {
@@ -1358,15 +1352,4 @@ mod test {
         assert_eq!(one, Felt::ONE);
         assert_eq!(zero, Felt::ZERO);
     }
-
-    #[test]
-    fn felt_size_of() {
-        assert_eq!(Felt::ZERO.size_of(), TotalSize::total(32));
-        assert_eq!(Felt::ONE.size_of(), TotalSize::total(32));
-        assert_eq!(
-            Felt(FieldElement::from(1600000000)).size_of(),
-            TotalSize::total(32)
-        );
-        assert_eq!(Felt::MAX.size_of(), TotalSize::total(32));
-    }
 }