diff --git a/go.mod b/go.mod
index 70bb9c6b12..e16612d2e1 100644
--- a/go.mod
+++ b/go.mod
@@ -58,7 +58,7 @@ require (
 	golang.org/x/net v0.0.0-20200822124328-c89045814202 // indirect
 	golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9 // indirect
 	golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c // indirect
-	golang.org/x/tools v0.0.0-20200221224223-e1da425f72fd
+	golang.org/x/tools v0.0.0-20200221224223-e1da425f72fd // indirect
 	google.golang.org/appengine v1.6.5 // indirect
 	google.golang.org/protobuf v1.25.0
 )
diff --git a/lib/babe/babe.go b/lib/babe/babe.go
index fb937b88cd..1c211a05e5 100644
--- a/lib/babe/babe.go
+++ b/lib/babe/babe.go
@@ -28,6 +28,7 @@ import (
 	"github.com/ChainSafe/gossamer/dot/types"
 	"github.com/ChainSafe/gossamer/lib/crypto/sr25519"
 	"github.com/ChainSafe/gossamer/lib/runtime"
+	rtstorage "github.com/ChainSafe/gossamer/lib/runtime/storage"
 	log "github.com/ChainSafe/log15"
 )
 
@@ -471,8 +472,15 @@ func (b *Service) handleSlot(slotNum uint64) error {
 		return nil
 	}
 
+	old := ts.Snapshot()
+
 	// block built successfully, store resulting trie in storage state
-	err = b.storageState.StoreTrie(ts)
+	oldTs, err := rtstorage.NewTrieState(old)
+	if err != nil {
+		return err
+	}
+
+	err = b.storageState.StoreTrie(oldTs)
 	if err != nil {
 		logger.Error("failed to store trie in storage state", "error", err)
 	}
diff --git a/tests/polkadotjs_test/test_transaction.js b/tests/polkadotjs_test/test_transaction.js
index ef7e448cd5..1d2db7e699 100644
--- a/tests/polkadotjs_test/test_transaction.js
+++ b/tests/polkadotjs_test/test_transaction.js
@@ -19,8 +19,7 @@ async function main() {
     const ADDR_Bob = '0x90b5ab205c6974c9ea841be688864633dc9ca8a357843eeacf2314649965fe22';
     // bob 5FHneW46xGXgs5mUiveU4sbTyGBzmstUspZC92UhjJM694ty
 
-    const transfer = await api.tx.balances.transfer(bobKey.address, 12345)
-        .signAndSend(aliceKey);
+    const transfer = await api.tx.balances.transfer(bobKey.address, 12345).signAndSend(aliceKey);
     console.log(`hxHash ${transfer}`);
 }