diff --git a/build/__native_5f8b22f5f815a3776376.c b/build/__native_5f8b22f5f815a3776376.c
index 2e4bae1f79..0fd049e4d2 100644
--- a/build/__native_5f8b22f5f815a3776376.c
+++ b/build/__native_5f8b22f5f815a3776376.c
@@ -236283,22 +236283,19 @@ PyObject *CPyDef_persistent_connection___PersistentConnection___subscriptions(Py
         cpy_r_r3 = cpy_r_r2;
     else {
         CPy_TypeErrorTraceback("faster_web3/providers/persistent/persistent_connection.py", "subscriptions", 50, CPyStatic_persistent_connection___globals, "faster_web3.providers.persistent.request_processor.RequestProcessor", cpy_r_r2);
-        goto CPyL5;
+        goto CPyL4;
     }
     cpy_r_r4 = CPyDef_request_processor___RequestProcessor___active_subscriptions(cpy_r_r3);
+    CPy_DECREF_NO_IMM(cpy_r_r3);
     if (unlikely(cpy_r_r4 == NULL)) {
         CPy_AddTraceback("faster_web3/providers/persistent/persistent_connection.py", "subscriptions", DIFFCHECK_PLACEHOLDER, CPyStatic_persistent_connection___globals);
-        goto CPyL5;
+        goto CPyL4;
     }
 CPyL3: ;
-    CPy_DECREF(cpy_r_r2);
     return cpy_r_r4;
 CPyL4: ;
     cpy_r_r5 = NULL;
     return cpy_r_r5;
-CPyL5: ;
-    CPy_DecRef(cpy_r_r2);
-    goto CPyL4;
 }
 
 PyObject *CPyPy_persistent_connection___PersistentConnection___subscriptions(PyObject *self, PyObject *const *args, size_t nargs, PyObject *kwnames) {
@@ -290138,7 +290135,7 @@ const char * const CPyLit_Str[] = {
     "\003\beth_sign\021eth_signTypedData$RPC_METHODS_UNSUPPORTED_DURING_BATCH",
     "\004\033faster_web3._utils.batching\004web3\016_requests_info\024_async_requests_info",
     "\004\016RequestBatcher\ais_text\bis_bytes\alatin-1",
-    "\005\036unrecognized block reference: \rWeb3TypeError\tfinalized\004safe\bearliest",
+    "\005\036unrecognized block reference: \rWeb3TypeError\004safe\tfinalized\bearliest",
     "\002\tis_string\006is_hex",
     "\001=Value did not match any of the recognized block identifiers: ",
     "\004\tTypeGuard\021typing_extensions\023ASYNC_PROVIDER_TYPE\022SYNC_PROVIDER_TYPE",
@@ -290784,8 +290781,8 @@ const int CPyLit_Tuple[] = {
     517, 1932, 1, 2315, 8, 73, 74, 366, 76, 78, 80, 522, 82, 1, 801
 };
 const int CPyLit_FrozenSet[] = {
-    4, 5, 394, 395, 296, 308, 396, 3, 19, 1941, 0, 2, 895, 896, 4, 1092,
-    1091, 1089, 379
+    4, 5, 308, 394, 296, 395, 396, 3, 19, 1941, 0, 2, 895, 896, 4, 1089,
+    1091, 1092, 379
 };
 CPyModule *CPyModule_faster_ens__internal = NULL;
 CPyModule *CPyModule_faster_ens;
diff --git a/faster_web3/datastructures.py b/faster_web3/datastructures.py
index 68d042b9c7..d12d1b1fdd 100644
--- a/faster_web3/datastructures.py
+++ b/faster_web3/datastructures.py
@@ -139,8 +139,10 @@ class AttributeDict(ReadableAttributeDict[TKey, TValue], Hashable):
     Provides superficial immutability, someone could hack around it
     """
 
+    __hash: Optional[int] = None
+
     def __setattr__(self, attr: str, val: TValue) -> None:
-        if attr == "__dict__":
+        if attr in ("__dict__", "_AttributeDict__hash"):
             super().__setattr__(attr, val)
         else:
             raise Web3TypeError(
@@ -153,7 +155,11 @@ def __delattr__(self, key: str) -> None:
         )
 
     def __hash__(self) -> int:
-        return hash(tuple(sorted(tupleize_lists_nested(self).items())))
+        cached_hash = self.__hash
+        if cached_hash is None:
+            # The hash value was not cached, let's compute it and store it
+            cached_hash = self.__hash = hash(tuple(sorted(tupleize_lists_nested(self).items())))
+        return cached_hash
 
     def __eq__(self, other: Any) -> bool:
         if isinstance(other, AttributeDict):