diff --git a/server/test/unit/Test/Generators.hs b/server/test/unit/Test/Generators.hs
index f17607090d..6f29190ed7 100644
--- a/server/test/unit/Test/Generators.hs
+++ b/server/test/unit/Test/Generators.hs
@@ -17,7 +17,7 @@ import Cardano.Ledger.Keys
 import Cardano.Ledger.Serialization
     ( ToCBORGroup )
 import Cardano.Network.Protocol.NodeToClient
-    ( Block )
+    ( Block, GenTxId )
 import Cardano.Slotting.Slot
     ( EpochNo (..) )
 import Cardano.Slotting.Time
@@ -44,6 +44,7 @@ import Ouroboros.Consensus.Cardano.Block
     , HardForkBlock (..)
     , MaryEra
     , ShelleyEra
+    , TxId (..)
     )
 import Ouroboros.Consensus.HardFork.Combinator
     ( LedgerEraInfo (..), Mismatch (..), MismatchEraInfo (..), singleEraInfo )
@@ -57,12 +58,16 @@ import Ouroboros.Consensus.Shelley.Ledger.Block
     ( ShelleyBlock (..) )
 import Ouroboros.Consensus.Shelley.Ledger.Config
     ( CompactGenesis, compactGenesis )
+import Ouroboros.Consensus.Shelley.Ledger.Mempool
+    ( TxId (..) )
 import Ouroboros.Consensus.Shelley.Ledger.Query
     ( NonMyopicMemberRewards (..) )
 import Ouroboros.Network.Block
     ( BlockNo (..), HeaderHash, Point (..), SlotNo (..), Tip (..) )
 import Ouroboros.Network.Protocol.LocalStateQuery.Type
     ( AcquireFailure (..) )
+import Ouroboros.Network.Protocol.LocalTxMonitor.Type
+    ( MempoolSizeAndCapacity (..) )
 import Ouroboros.Network.Protocol.LocalTxSubmission.Type
     ( SubmitResult (..) )
 import Test.Cardano.Ledger.Shelley.ConcreteCryptoTypes
@@ -115,6 +120,16 @@ genBlock = reasonablySized $ oneof
         <$> (Ledger.Block <$> arbitrary <*> (toTxSeq @era <$> arbitrary))
         <*> arbitrary
 
+genTxId :: Gen (GenTxId Block)
+genTxId =
+    GenTxIdAlonzo . ShelleyTxId <$> arbitrary
+
+genMempoolSizeAndCapacity :: Gen MempoolSizeAndCapacity
+genMempoolSizeAndCapacity = MempoolSizeAndCapacity
+    <$> arbitrary
+    <*> arbitrary
+    <*> arbitrary
+
 genWithOrigin :: Gen a -> Gen (Point.WithOrigin a)
 genWithOrigin genA = frequency
     [ (1, pure Point.Origin)