diff --git a/src/objects/dict.c b/src/objects/dict.c
index f1c91590..31da0e7a 100644
--- a/src/objects/dict.c
+++ b/src/objects/dict.c
@@ -69,7 +69,7 @@ static void pkpy_Dict__htset(pkpy_Dict* self, int h, int v) {
     }
 }
 
-static int pkpy_Dict__probe(const pkpy_Dict* self, void* vm, pkpy_Var key, int64_t hash) {
+static int pkpy_Dict__probe0(const pkpy_Dict* self, void* vm, pkpy_Var key, int64_t hash) {
     const int null = pkpy_Dict__idx_null(self);
     const int mask = self->_htcap - 1;
     for(int h = hash & mask;; h = (h + 1) & mask) {
@@ -83,6 +83,19 @@ static int pkpy_Dict__probe(const pkpy_Dict* self, void* vm, pkpy_Var key, int64
     PK_UNREACHABLE();
 }
 
+static int pkpy_Dict__probe1(const pkpy_Dict* self, void* vm, pkpy_Var key, int64_t hash) {
+    const int null = pkpy_Dict__idx_null(self);
+    const int mask = self->_htcap - 1;
+    for(int h = hash & mask;; h = (h + 1) & mask) {
+        int idx = pkpy_Dict__htget(self, h);
+        if(idx == null) return h;
+
+        struct pkpy_DictEntry* entry = &c11__getitem(struct pkpy_DictEntry, &self->_entries, idx);
+        if(entry->hash == hash && pkpy_Var__eq__(vm, entry->key, key)) return h;
+    }
+    PK_UNREACHABLE();
+}
+
 static void pkpy_Dict__extendht(pkpy_Dict* self, void* vm) {
     self->_version += 1;
     free(self->_hashtable);
@@ -94,14 +107,14 @@ static void pkpy_Dict__extendht(pkpy_Dict* self, void* vm) {
         struct pkpy_DictEntry* entry = &c11__getitem(struct pkpy_DictEntry, &self->_entries, i);
         if(pkpy_Var__is_null(&entry->key)) continue;
 
-        int h = pkpy_Dict__probe(self, vm, entry->key, entry->hash);
+        int h = pkpy_Dict__probe0(self, vm, entry->key, entry->hash);
         pkpy_Dict__htset(self, h, i);
     }
 }
 
 bool pkpy_Dict__set(pkpy_Dict* self, void* vm, pkpy_Var key, pkpy_Var val) {
     int hash = pkpy_Var__hash__(vm, key);
-    int h = pkpy_Dict__probe(self, vm, key, hash);
+    int h = pkpy_Dict__probe1(self, vm, key, hash);
 
     int idx = pkpy_Dict__htget(self, h);
     if(idx == pkpy_Dict__idx_null(self)) {
@@ -114,6 +127,7 @@ bool pkpy_Dict__set(pkpy_Dict* self, void* vm, pkpy_Var key, pkpy_Var val) {
                              .key = key,
                              .val = val,
                          }));
+        h = pkpy_Dict__probe0(self, vm, key, hash);
         pkpy_Dict__htset(self, h, idx);
         self->count += 1;
         if(self->count >= self->_htcap * 0.75) pkpy_Dict__extendht(self, vm);
@@ -121,17 +135,31 @@ bool pkpy_Dict__set(pkpy_Dict* self, void* vm, pkpy_Var key, pkpy_Var val) {
     }
 
     struct pkpy_DictEntry* entry = &c11__getitem(struct pkpy_DictEntry, &self->_entries, idx);
-    assert(entry->hash == hash && pkpy_Var__eq__(vm, entry->key, key));
-    entry->val = val;
+
+    if(entry->hash == hash || pkpy_Var__eq__(vm, entry->key, key)) {
+        entry->val = val;
+    } else {
+        self->_version += 1;
+        self->count += 1;
+        h = pkpy_Dict__probe0(self, vm, key, hash);
+        idx = pkpy_Dict__htget(self, h);
+        struct pkpy_DictEntry* entry = &c11__getitem(struct pkpy_DictEntry, &self->_entries, idx);
+        entry->key = key;
+        entry->val = val;
+        entry->hash = hash;
+    }
     return false;
 }
 
 bool pkpy_Dict__contains(const pkpy_Dict* self, void* vm, pkpy_Var key) {
     int hash = pkpy_Var__hash__(vm, key);
-    int h = pkpy_Dict__probe(self, vm, key, hash);
+    int h = pkpy_Dict__probe1(self, vm, key, hash);
 
     int idx = pkpy_Dict__htget(self, h);
     if(idx == pkpy_Dict__idx_null(self)) return false;
+
+    struct pkpy_DictEntry* entry = &c11__getitem(struct pkpy_DictEntry, &self->_entries, idx);
+    assert(entry->hash == hash && pkpy_Var__eq__(vm, entry->key, key));
     return true;
 }
 
@@ -155,7 +183,7 @@ static bool pkpy_Dict__refactor(pkpy_Dict* self, void* vm) {
 
         int j = self->_entries.count;
         c11_vector__push(struct pkpy_DictEntry, &self->_entries, *entry);
-        int h = pkpy_Dict__probe(self, vm, entry->key, entry->hash);
+        int h = pkpy_Dict__probe0(self, vm, entry->key, entry->hash);
         pkpy_Dict__htset(self, h, j);
     }
     c11_vector__dtor(&old_entries);
@@ -164,15 +192,14 @@ static bool pkpy_Dict__refactor(pkpy_Dict* self, void* vm) {
 
 bool pkpy_Dict__del(pkpy_Dict* self, void* vm, pkpy_Var key) {
     int hash = pkpy_Var__hash__(vm, key);
-    int h = pkpy_Dict__probe(self, vm, key, hash);
+    int h = pkpy_Dict__probe1(self, vm, key, hash);
     int idx = pkpy_Dict__htget(self, h), null = pkpy_Dict__idx_null(self);
     if(idx == null) return false;
     
-    self->_version += 1;
     struct pkpy_DictEntry* entry = &c11__getitem(struct pkpy_DictEntry, &self->_entries, idx);
     assert(entry->hash == hash && pkpy_Var__eq__(vm, entry->key, key));
+    self->_version += 1;
     pkpy_Var__set_null(&entry->key);
-    pkpy_Dict__htset(self, h, null);
     self->count -= 1;
     pkpy_Dict__refactor(self, vm);
     return true;
@@ -180,7 +207,7 @@ bool pkpy_Dict__del(pkpy_Dict* self, void* vm, pkpy_Var key) {
 
 const pkpy_Var *pkpy_Dict__try_get(const pkpy_Dict* self, void* vm, pkpy_Var key) {
     int hash = pkpy_Var__hash__(vm, key);
-    int h = pkpy_Dict__probe(self, vm, key, hash);
+    int h = pkpy_Dict__probe1(self, vm, key, hash);
     
     int idx = pkpy_Dict__htget(self, h);
     if(idx == pkpy_Dict__idx_null(self)) return NULL;