diff --git a/conda_libmamba_solver/solver.py b/conda_libmamba_solver/solver.py
index 82c3e0c7..2ec62eb1 100644
--- a/conda_libmamba_solver/solver.py
+++ b/conda_libmamba_solver/solver.py
@@ -947,7 +947,7 @@ def _check_spec_compat(self, match_spec: Union[MatchSpec, None]) -> Union[MatchS
         if match_spec is None:
             return None
         supported = "name", "version", "build", "channel", "subdir"
-        droppable = ("url",)
+        droppable = ("url", "md5", "sha256")
         unsupported_but_set = []
         to_drop = set()
         to_keep = {}
diff --git a/news/421-matchspec-validation b/news/421-matchspec-validation
index 802eb0f8..9b313b0c 100644
--- a/news/421-matchspec-validation
+++ b/news/421-matchspec-validation
@@ -4,7 +4,7 @@
 
 ### Bug fixes
 
-* Do not raise error if an unsupported `MatchSpec` field can be safely dropped instead. (#418 via #421)
+* Do not raise an error if an unsupported `MatchSpec` field can be safely dropped instead. Currently ignoring `url`, `md5` and `sha256`. (#418 via #421, #427 via #429).
 
 ### Deprecations