diff --git a/crates/cdk/src/cdk_database/wallet_memory.rs b/crates/cdk/src/cdk_database/wallet_memory.rs
index 4bee0967..e5065dee 100644
--- a/crates/cdk/src/cdk_database/wallet_memory.rs
+++ b/crates/cdk/src/cdk_database/wallet_memory.rs
@@ -4,7 +4,7 @@ use std::collections::{HashMap, HashSet};
 use std::sync::Arc;
 
 use async_trait::async_trait;
-use tokio::sync::Mutex;
+use tokio::sync::RwLock;
 
 use super::WalletDatabase;
 use crate::cdk_database::Error;
@@ -14,14 +14,14 @@ use crate::url::UncheckedUrl;
 
 #[derive(Default, Debug, Clone)]
 pub struct WalletMemoryDatabase {
-    mints: Arc<Mutex<HashMap<UncheckedUrl, Option<MintInfo>>>>,
-    mint_keysets: Arc<Mutex<HashMap<UncheckedUrl, HashSet<KeySetInfo>>>>,
-    mint_quotes: Arc<Mutex<HashMap<String, MintQuote>>>,
-    melt_quotes: Arc<Mutex<HashMap<String, MeltQuote>>>,
-    mint_keys: Arc<Mutex<HashMap<Id, Keys>>>,
-    proofs: Arc<Mutex<HashMap<UncheckedUrl, HashSet<Proof>>>>,
-    pending_proofs: Arc<Mutex<HashMap<UncheckedUrl, HashSet<Proof>>>>,
-    keyset_counter: Arc<Mutex<HashMap<Id, u32>>>,
+    mints: Arc<RwLock<HashMap<UncheckedUrl, Option<MintInfo>>>>,
+    mint_keysets: Arc<RwLock<HashMap<UncheckedUrl, HashSet<KeySetInfo>>>>,
+    mint_quotes: Arc<RwLock<HashMap<String, MintQuote>>>,
+    melt_quotes: Arc<RwLock<HashMap<String, MeltQuote>>>,
+    mint_keys: Arc<RwLock<HashMap<Id, Keys>>>,
+    proofs: Arc<RwLock<HashMap<UncheckedUrl, HashSet<Proof>>>>,
+    pending_proofs: Arc<RwLock<HashMap<UncheckedUrl, HashSet<Proof>>>>,
+    keyset_counter: Arc<RwLock<HashMap<Id, u32>>>,
 }
 
 impl WalletMemoryDatabase {
@@ -32,20 +32,20 @@ impl WalletMemoryDatabase {
         keyset_counter: HashMap<Id, u32>,
     ) -> Self {
         Self {
-            mints: Arc::new(Mutex::new(HashMap::new())),
-            mint_keysets: Arc::new(Mutex::new(HashMap::new())),
-            mint_quotes: Arc::new(Mutex::new(
+            mints: Arc::new(RwLock::new(HashMap::new())),
+            mint_keysets: Arc::new(RwLock::new(HashMap::new())),
+            mint_quotes: Arc::new(RwLock::new(
                 mint_quotes.into_iter().map(|q| (q.id.clone(), q)).collect(),
             )),
-            melt_quotes: Arc::new(Mutex::new(
+            melt_quotes: Arc::new(RwLock::new(
                 melt_quotes.into_iter().map(|q| (q.id.clone(), q)).collect(),
             )),
-            mint_keys: Arc::new(Mutex::new(
+            mint_keys: Arc::new(RwLock::new(
                 mint_keys.into_iter().map(|k| (Id::from(&k), k)).collect(),
             )),
-            proofs: Arc::new(Mutex::new(HashMap::new())),
-            pending_proofs: Arc::new(Mutex::new(HashMap::new())),
-            keyset_counter: Arc::new(Mutex::new(keyset_counter)),
+            proofs: Arc::new(RwLock::new(HashMap::new())),
+            pending_proofs: Arc::new(RwLock::new(HashMap::new())),
+            keyset_counter: Arc::new(RwLock::new(keyset_counter)),
         }
     }
 }
@@ -60,16 +60,16 @@ impl WalletDatabase for WalletMemoryDatabase {
         mint_url: UncheckedUrl,
         mint_info: Option<MintInfo>,
     ) -> Result<(), Self::Err> {
-        self.mints.lock().await.insert(mint_url, mint_info);
+        self.mints.write().await.insert(mint_url, mint_info);
         Ok(())
     }
 
     async fn get_mint(&self, mint_url: UncheckedUrl) -> Result<Option<MintInfo>, Self::Err> {
-        Ok(self.mints.lock().await.get(&mint_url).cloned().flatten())
+        Ok(self.mints.read().await.get(&mint_url).cloned().flatten())
     }
 
     async fn get_mints(&self) -> Result<HashMap<UncheckedUrl, Option<MintInfo>>, Error> {
-        Ok(self.mints.lock().await.clone())
+        Ok(self.mints.read().await.clone())
     }
 
     async fn add_mint_keysets(
@@ -77,7 +77,7 @@ impl WalletDatabase for WalletMemoryDatabase {
         mint_url: UncheckedUrl,
         keysets: Vec<KeySetInfo>,
     ) -> Result<(), Error> {
-        let mut current_keysets = self.mint_keysets.lock().await;
+        let mut current_keysets = self.mint_keysets.write().await;
 
         let mint_keysets = current_keysets.entry(mint_url).or_insert(HashSet::new());
         mint_keysets.extend(keysets);
@@ -91,7 +91,7 @@ impl WalletDatabase for WalletMemoryDatabase {
     ) -> Result<Option<Vec<KeySetInfo>>, Error> {
         Ok(self
             .mint_keysets
-            .lock()
+            .read()
             .await
             .get(&mint_url)
             .map(|ks| ks.iter().cloned().collect()))
@@ -99,61 +99,61 @@ impl WalletDatabase for WalletMemoryDatabase {
 
     async fn add_mint_quote(&self, quote: MintQuote) -> Result<(), Error> {
         self.mint_quotes
-            .lock()
+            .write()
             .await
             .insert(quote.id.clone(), quote);
         Ok(())
     }
 
     async fn get_mint_quote(&self, quote_id: &str) -> Result<Option<MintQuote>, Error> {
-        Ok(self.mint_quotes.lock().await.get(quote_id).cloned())
+        Ok(self.mint_quotes.read().await.get(quote_id).cloned())
     }
 
     async fn get_mint_quotes(&self) -> Result<Vec<MintQuote>, Error> {
-        let quotes = self.mint_quotes.lock().await;
+        let quotes = self.mint_quotes.read().await;
         Ok(quotes.values().cloned().collect())
     }
 
     async fn remove_mint_quote(&self, quote_id: &str) -> Result<(), Error> {
-        self.mint_quotes.lock().await.remove(quote_id);
+        self.mint_quotes.write().await.remove(quote_id);
 
         Ok(())
     }
 
     async fn add_melt_quote(&self, quote: MeltQuote) -> Result<(), Error> {
         self.melt_quotes
-            .lock()
+            .write()
             .await
             .insert(quote.id.clone(), quote);
         Ok(())
     }
 
     async fn get_melt_quote(&self, quote_id: &str) -> Result<Option<MeltQuote>, Error> {
-        Ok(self.melt_quotes.lock().await.get(quote_id).cloned())
+        Ok(self.melt_quotes.read().await.get(quote_id).cloned())
     }
 
     async fn remove_melt_quote(&self, quote_id: &str) -> Result<(), Error> {
-        self.melt_quotes.lock().await.remove(quote_id);
+        self.melt_quotes.write().await.remove(quote_id);
 
         Ok(())
     }
 
     async fn add_keys(&self, keys: Keys) -> Result<(), Error> {
-        self.mint_keys.lock().await.insert(Id::from(&keys), keys);
+        self.mint_keys.write().await.insert(Id::from(&keys), keys);
         Ok(())
     }
 
     async fn get_keys(&self, id: &Id) -> Result<Option<Keys>, Error> {
-        Ok(self.mint_keys.lock().await.get(id).cloned())
+        Ok(self.mint_keys.read().await.get(id).cloned())
     }
 
     async fn remove_keys(&self, id: &Id) -> Result<(), Error> {
-        self.mint_keys.lock().await.remove(id);
+        self.mint_keys.write().await.remove(id);
         Ok(())
     }
 
     async fn add_proofs(&self, mint_url: UncheckedUrl, proofs: Proofs) -> Result<(), Error> {
-        let mut all_proofs = self.proofs.lock().await;
+        let mut all_proofs = self.proofs.write().await;
 
         let mint_proofs = all_proofs.entry(mint_url).or_insert(HashSet::new());
         mint_proofs.extend(proofs);
@@ -164,14 +164,14 @@ impl WalletDatabase for WalletMemoryDatabase {
     async fn get_proofs(&self, mint_url: UncheckedUrl) -> Result<Option<Proofs>, Error> {
         Ok(self
             .proofs
-            .lock()
+            .read()
             .await
             .get(&mint_url)
             .map(|p| p.iter().cloned().collect()))
     }
 
     async fn remove_proofs(&self, mint_url: UncheckedUrl, proofs: &Proofs) -> Result<(), Error> {
-        let mut mint_proofs = self.proofs.lock().await;
+        let mut mint_proofs = self.proofs.write().await;
 
         if let Some(mint_proofs) = mint_proofs.get_mut(&mint_url) {
             for proof in proofs {
@@ -187,7 +187,7 @@ impl WalletDatabase for WalletMemoryDatabase {
         mint_url: UncheckedUrl,
         proofs: Proofs,
     ) -> Result<(), Error> {
-        let mut all_proofs = self.pending_proofs.lock().await;
+        let mut all_proofs = self.pending_proofs.write().await;
 
         let mint_proofs = all_proofs.entry(mint_url).or_insert(HashSet::new());
         mint_proofs.extend(proofs);
@@ -198,7 +198,7 @@ impl WalletDatabase for WalletMemoryDatabase {
     async fn get_pending_proofs(&self, mint_url: UncheckedUrl) -> Result<Option<Proofs>, Error> {
         Ok(self
             .pending_proofs
-            .lock()
+            .read()
             .await
             .get(&mint_url)
             .map(|p| p.iter().cloned().collect()))
@@ -209,7 +209,7 @@ impl WalletDatabase for WalletMemoryDatabase {
         mint_url: UncheckedUrl,
         proofs: &Proofs,
     ) -> Result<(), Error> {
-        let mut mint_proofs = self.pending_proofs.lock().await;
+        let mut mint_proofs = self.pending_proofs.write().await;
 
         if let Some(mint_proofs) = mint_proofs.get_mut(&mint_url) {
             for proof in proofs {
@@ -221,16 +221,16 @@ impl WalletDatabase for WalletMemoryDatabase {
     }
 
     async fn increment_keyset_counter(&self, keyset_id: &Id, count: u32) -> Result<(), Error> {
-        let keyset_counter = self.keyset_counter.lock().await;
+        let keyset_counter = self.keyset_counter.read().await;
         let current_counter = keyset_counter.get(keyset_id).unwrap_or(&0);
         self.keyset_counter
-            .lock()
+            .write()
             .await
             .insert(*keyset_id, current_counter + count);
         Ok(())
     }
 
     async fn get_keyset_counter(&self, id: &Id) -> Result<Option<u32>, Error> {
-        Ok(self.keyset_counter.lock().await.get(id).cloned())
+        Ok(self.keyset_counter.read().await.get(id).cloned())
     }
 }