diff --git a/Cargo.toml b/Cargo.toml
index bc3b08c5..d483f58f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ members = ["crates/*"]
 resolver = "2"
 
 [workspace.package]
-version = "0.4.0"
+version = "0.4.1"
 edition = "2021"
 rust-version = "1.81"
 authors = ["init4"]
diff --git a/crates/bundle/src/send/bundle.rs b/crates/bundle/src/send/bundle.rs
index a6be0ef1..ef3178bd 100644
--- a/crates/bundle/src/send/bundle.rs
+++ b/crates/bundle/src/send/bundle.rs
@@ -68,6 +68,18 @@ impl SignetEthBundle {
         self.bundle.replacement_uuid.as_deref()
     }
 
+    /// Checks if the bundle is valid at a given timestamp.
+    pub fn is_valid_at_timestamp(&self, timestamp: u64) -> bool {
+        let min_timestamp = self.bundle.min_timestamp.unwrap_or(0);
+        let max_timestamp = self.bundle.max_timestamp.unwrap_or(u64::MAX);
+        timestamp >= min_timestamp && timestamp <= max_timestamp
+    }
+
+    /// Checks if the bundle is valid at a given block number.
+    pub const fn is_valid_at_block_number(&self, block_number: u64) -> bool {
+        self.bundle.block_number == block_number
+    }
+
     /// Decode and validate the transactions in the bundle.
     pub fn decode_and_validate_txs<Db: Database>(
         &self,
diff --git a/crates/sim/src/cache.rs b/crates/sim/src/cache.rs
index e81d17c2..1be9528b 100644
--- a/crates/sim/src/cache.rs
+++ b/crates/sim/src/cache.rs
@@ -172,16 +172,14 @@ impl SimCache {
         items.retain(|_, item| {
             // Retain only items that are not bundles or are valid in the current block.
             if let SimItem::Bundle(bundle) = item {
-                let should_remove = bundle.bundle.block_number == block_number
-                    && bundle.min_timestamp().is_some_and(|ts| ts <= block_timestamp)
-                    && bundle.max_timestamp().is_some_and(|ts| ts >= block_timestamp);
+                let should_keep = bundle.is_valid_at_block_number(block_number)
+                    && bundle.is_valid_at_timestamp(block_timestamp);
 
-                let retain = !should_remove;
-
-                if should_remove {
+                if !should_keep {
                     seen.remove(item.identifier().as_bytes());
                 }
-                retain
+
+                should_keep
             } else {
                 true // Non-bundle items are retained
             }