diff --git a/gno.land/pkg/gnoclient/integration_test.go b/gno.land/pkg/gnoclient/integration_test.go
index d3d4e0d2c52..6487544b78b 100644
--- a/gno.land/pkg/gnoclient/integration_test.go
+++ b/gno.land/pkg/gnoclient/integration_test.go
@@ -719,6 +719,5 @@ func loadpkgs(t *testing.T, rootdir string, paths ...string) []gnoland.TxWithMet
 
 	meta, err := loader.LoadPackages(creator, defaultFee, nil)
 	require.NoError(t, err)
-
 	return meta
 }
diff --git a/gno.land/pkg/integration/defaultsigner.go b/gno.land/pkg/integration/defaultsigner.go
new file mode 100644
index 00000000000..d4dae5b0f61
--- /dev/null
+++ b/gno.land/pkg/integration/defaultsigner.go
@@ -0,0 +1,32 @@
+package integration
+
+import (
+	"github.com/gnolang/gno/gno.land/pkg/gnoland"
+	"github.com/gnolang/gno/tm2/pkg/crypto/keys"
+	"github.com/gnolang/gno/tm2/pkg/std"
+)
+
+func SignTxs(txs []gnoland.TxWithMetadata, chainID string) error {
+	kb := keys.NewInMemory()
+	_, err := kb.CreateAccount(DefaultAccount_Name, DefaultAccount_Seed, "", "", 0, 0)
+	if err != nil {
+		return err
+	}
+	for index, tx := range txs {
+		bytes, err := tx.Tx.GetSignBytes(chainID, 0, 0)
+		if err != nil {
+			return err
+		}
+		signature, publicKey, err := kb.Sign(DefaultAccount_Name, "", bytes)
+		if err != nil {
+			return err
+		}
+		txs[index].Tx.Signatures = []std.Signature{
+			{
+				PubKey:    publicKey,
+				Signature: signature,
+			},
+		}
+	}
+	return nil
+}
diff --git a/gno.land/pkg/integration/pkgloader.go b/gno.land/pkg/integration/pkgloader.go
index 541e24b96eb..dffd4a540bd 100644
--- a/gno.land/pkg/integration/pkgloader.go
+++ b/gno.land/pkg/integration/pkgloader.go
@@ -77,6 +77,11 @@ func (pl *PkgsLoader) LoadPackages(creator bft.Address, fee std.Fee, deposit std
 		}
 	}
 
+	err = SignTxs(txs, "tendermint_test")
+	if err != nil {
+		return nil, fmt.Errorf("unable to sign txs: %w", err)
+	}
+
 	return txs, nil
 }