diff --git a/crates/rpc-types-anvil/src/lib.rs b/crates/rpc-types-anvil/src/lib.rs
index 991f783e40e..e1495aee168 100644
--- a/crates/rpc-types-anvil/src/lib.rs
+++ b/crates/rpc-types-anvil/src/lib.rs
@@ -31,7 +31,7 @@ impl<'de> serde::Deserialize<'de> for Forking {
         #[serde(rename_all = "camelCase")]
         struct ForkOpts {
             json_rpc_url: Option<String>,
-            #[serde(default, with = "alloy_serde::quantity::opt")]
+            #[serde(default, with = "alloy_serde::num::u64_opt_via_ruint")]
             block_number: Option<u64>,
         }
 
@@ -148,15 +148,15 @@ pub enum MineOptions {
     /// The options for mining
     Options {
         /// The timestamp the block should be mined with
-        #[serde(with = "alloy_serde::quantity::opt")]
+        #[serde(with = "alloy_serde::num::u64_opt_via_ruint")]
         timestamp: Option<u64>,
         /// If `blocks` is given, it will mine exactly blocks number of blocks, regardless of any
         /// other blocks mined or reverted during it's operation
-        #[serde(with = "alloy_serde::quantity::opt")]
+        #[serde(with = "alloy_serde::num::u64_opt_via_ruint")]
         blocks: Option<u64>,
     },
     /// The timestamp the block should be mined with
-    #[serde(with = "alloy_serde::quantity::opt")]
+    #[serde(with = "alloy_serde::num::u64_opt_via_ruint")]
     Timestamp(Option<u64>),
 }