diff --git a/CHANGELOG b/CHANGELOG
index d874d86235..fa365d2664 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,5 @@
+* Cache RPC call for class method selection
+
 Version 6.6.0 - 2022-10-31
 --------------------------
 * Bug fixes (see mercurial logs for details)
diff --git a/trytond/model/fields/multiselection.py b/trytond/model/fields/multiselection.py
index 1142e31340..82a1260028 100644
--- a/trytond/model/fields/multiselection.py
+++ b/trytond/model/fields/multiselection.py
@@ -51,8 +51,9 @@ class MultiSelection(SelectionMixin, Field):
             assert hasattr(model, self.selection), \
                 'Missing %s on model %s' % (self.selection, model.__name__)
             instantiate = 0 if self.selection_change_with else None
+            cache = dict(days=1) if instantiate is None else None
             model.__rpc__.setdefault(
-                self.selection, RPC(instantiate=instantiate))
+                self.selection, RPC(instantiate=instantiate, cache=cache))
 
     def get(self, ids, model, name, values=None):
         lists = {id: () for id in ids}
diff --git a/trytond/model/fields/reference.py b/trytond/model/fields/reference.py
index 2aa9c6a96e..2e31694166 100644
--- a/trytond/model/fields/reference.py
+++ b/trytond/model/fields/reference.py
@@ -110,8 +110,9 @@ class Reference(SelectionMixin, Field):
             assert hasattr(model, self.selection), \
                 'Missing %s on model %s' % (self.selection, model.__name__)
             instantiate = 0 if self.selection_change_with else None
+            cache = dict(days=1) if instantiate is None else None
             model.__rpc__.setdefault(
-                self.selection, RPC(instantiate=instantiate))
+                self.selection, RPC(instantiate=instantiate, cache=cache))
 
     def get(self, ids, model, name, values=None):
         '''
diff --git a/trytond/model/fields/selection.py b/trytond/model/fields/selection.py
index 498076e2b4..8230f77da8 100644
--- a/trytond/model/fields/selection.py
+++ b/trytond/model/fields/selection.py
@@ -116,8 +116,9 @@ class Selection(SelectionMixin, Field):
             assert hasattr(model, self.selection), \
                 'Missing %s on model %s' % (self.selection, model.__name__)
             instantiate = 0 if self.selection_change_with else None
+            cache = dict(days=1) if instantiate is None else None
             model.__rpc__.setdefault(
-                self.selection, RPC(instantiate=instantiate))
+                self.selection, RPC(instantiate=instantiate, cache=cache))
 
     def convert_order(self, name, tables, Model):
         if getattr(Model, 'order_%s' % name, None):