diff --git a/Makefile b/Makefile
index 58784725..946e3a35 100644
--- a/Makefile
+++ b/Makefile
@@ -105,7 +105,7 @@ test-single-integration:
 
 .PHONY: test-relayer
 test-relayer:
-	cd $(RELAYER_DIR) && go clean -testcache && go test -v -mod=readonly -parallel=20 -timeout 1m ./...
+	cd $(RELAYER_DIR) && go clean -testcache && go test -v -mod=readonly -parallel=20 -timeout 30m -race ./...
 
 .PHONY: test-contract
 test-contract:
diff --git a/integration-tests/contract.go b/integration-tests/contract.go
index 8af17f67..ca71d03c 100644
--- a/integration-tests/contract.go
+++ b/integration-tests/contract.go
@@ -84,8 +84,16 @@ func DeployAndInstantiateContractV110(
 		Amount: issueFee.Amount.AddRaw(2_000_000),
 	})
 
+	contactCfg := coreum.DefaultContractClientConfig(sdk.AccAddress(nil))
+
+	// integration tests are running in parallel producing the high load on the chain, as a result, periodically,
+	// with default gas adjustments, the tests might fail because of estimation delay and feemodel gas price change
+	// the custom gas adjustment config prevents the failure
+	contactCfg.GasAdjustment = 1.5
+	contactCfg.GasPriceAdjustment = sdk.MustNewDecFromStr("1.5")
+
 	contractClient := coreum.NewContractClient(
-		coreum.DefaultContractClientConfig(sdk.AccAddress(nil)),
+		contactCfg,
 		chains.Log,
 		chains.Coreum.ClientContext,
 	)
diff --git a/relayer/runner/config_test.go b/relayer/runner/config_test.go
index 34da1585..80a547da 100644
--- a/relayer/runner/config_test.go
+++ b/relayer/runner/config_test.go
@@ -11,6 +11,7 @@ import (
 	"github.com/CoreumFoundation/coreumbridge-xrpl/relayer/runner"
 )
 
+//nolint:tparallel // the test is parallel, but test cases are not
 func TestInitAndReadConfig(t *testing.T) {
 	t.Parallel()
 
@@ -60,7 +61,7 @@ func TestInitAndReadConfig(t *testing.T) {
 	for _, tc := range tests {
 		tc := tc
 		t.Run(tc.name, func(tt *testing.T) {
-			tt.Parallel()
+			// not parallel intentionally top prevent race
 
 			// create temp dir to store the config
 			tempDir := tt.TempDir()
diff --git a/relayer/runner/runner_test.go b/relayer/runner/runner_test.go
index 7482a769..75ffe032 100644
--- a/relayer/runner/runner_test.go
+++ b/relayer/runner/runner_test.go
@@ -10,6 +10,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/golang/mock/gomock"
 	"github.com/stretchr/testify/require"
 
 	"github.com/CoreumFoundation/coreum-tools/pkg/parallel"
@@ -48,12 +49,6 @@ func (c *counter) Start(ctx context.Context) error {
 func Test_taskWithRestartOnError(t *testing.T) {
 	t.Parallel()
 
-	zapLogger, err := logger.NewZapLogger(logger.ZapLoggerConfig{
-		Level:  "error",
-		Format: logger.YamlConsoleLoggerFormat,
-	})
-	require.NoError(t, err)
-
 	tests := []struct {
 		name          string
 		runTimeout    time.Duration
@@ -97,11 +92,16 @@ func Test_taskWithRestartOnError(t *testing.T) {
 
 			c := newCounter()
 
-			err = parallel.Run(ctx, func(ctx context.Context, spawn parallel.SpawnFn) error {
+			ctrl := gomock.NewController(t)
+			defer ctrl.Finish()
+			logMock := logger.NewAnyLogMock(ctrl)
+			logMock.EXPECT().Error(gomock.Any(), gomock.Any(), gomock.Any()).AnyTimes()
+
+			err := parallel.Run(ctx, func(ctx context.Context, spawn parallel.SpawnFn) error {
 				spawn(tc.name, parallel.Continue, func(ctx context.Context) error {
 					tsk := taskWithRestartOnError(
 						c.Start,
-						zapLogger,
+						logMock,
 						tc.exitOnError,
 						tc.retryDelay,
 					)