diff --git a/rest_framework_simplejwt/serializers.py b/rest_framework_simplejwt/serializers.py
index 3dc318687..76501ee1f 100644
--- a/rest_framework_simplejwt/serializers.py
+++ b/rest_framework_simplejwt/serializers.py
@@ -7,6 +7,7 @@
 from rest_framework import exceptions, serializers
 from rest_framework.exceptions import ValidationError
 
+from .exceptions import TokenError
 from .models import TokenUser
 from .settings import api_settings
 from .tokens import RefreshToken, SlidingToken, Token, UntypedToken
@@ -105,7 +106,10 @@ class TokenRefreshSerializer(serializers.Serializer):
     token_class = RefreshToken
 
     def validate(self, attrs: Dict[str, Any]) -> Dict[str, str]:
-        refresh = self.token_class(attrs["refresh"])
+        try:
+            refresh = self.token_class(attrs["refresh"])
+        except TokenError:
+            raise serializers.ValidationError("token is not valid")
 
         data = {"access": str(refresh.access_token)}