diff --git a/rs/artifact_pool/src/canister_http_pool.rs b/rs/artifact_pool/src/canister_http_pool.rs
index 1bebd91aa81..af4e31ee6f1 100644
--- a/rs/artifact_pool/src/canister_http_pool.rs
+++ b/rs/artifact_pool/src/canister_http_pool.rs
@@ -177,7 +177,7 @@ impl ValidatedPoolReader<CanisterHttpArtifact> for CanisterHttpPoolImpl {
         &self,
         _filter: &(),
     ) -> Box<dyn Iterator<Item = CanisterHttpResponseShare> + '_> {
-        unimplemented!()
+        Box::new(std::iter::empty())
     }
 }
 
diff --git a/rs/artifact_pool/src/dkg_pool.rs b/rs/artifact_pool/src/dkg_pool.rs
index c6e1e287765..81895395e1e 100644
--- a/rs/artifact_pool/src/dkg_pool.rs
+++ b/rs/artifact_pool/src/dkg_pool.rs
@@ -154,7 +154,7 @@ impl ValidatedPoolReader<DkgArtifact> for DkgPoolImpl {
     }
 
     fn get_all_validated_by_filter(&self, _filter: &()) -> Box<dyn Iterator<Item = dkg::Message>> {
-        unimplemented!()
+        Box::new(std::iter::empty())
     }
 }
 
diff --git a/rs/artifact_pool/src/ecdsa_pool.rs b/rs/artifact_pool/src/ecdsa_pool.rs
index 4112aa18dbc..2235d6d5de5 100644
--- a/rs/artifact_pool/src/ecdsa_pool.rs
+++ b/rs/artifact_pool/src/ecdsa_pool.rs
@@ -468,7 +468,7 @@ impl ValidatedPoolReader<EcdsaArtifact> for EcdsaPoolImpl {
     }
 
     fn get_all_validated_by_filter(&self, _filter: &()) -> Box<dyn Iterator<Item = EcdsaMessage>> {
-        unimplemented!()
+        Box::new(std::iter::empty())
     }
 }