diff --git a/pkg/configmap/configmap.go b/pkg/configmap/configmap.go
index 2b310371f..f6ab07ec3 100644
--- a/pkg/configmap/configmap.go
+++ b/pkg/configmap/configmap.go
@@ -3,6 +3,8 @@ package configmap
 import (
 	"errors"
 	"fmt"
+	"maps"
+	"slices"
 	"strings"
 
 	"github.com/sirupsen/logrus"
@@ -68,7 +70,9 @@ func loadBundle(entry *logrus.Entry, cm *corev1.ConfigMap) (*api.Bundle, map[str
 	}
 
 	// Add kube resources to the bundle.
-	for name, content := range data {
+	// Sort keys by name to guarantee consistent ordering of bundle objects.
+	for _, name := range slices.Sorted(maps.Keys(data)) {
+		content := data[name]
 		reader := strings.NewReader(content)
 		logger := entry.WithFields(logrus.Fields{
 			"key": name,
diff --git a/pkg/configmap/configmap_test.go b/pkg/configmap/configmap_test.go
index 05e54bd93..f167b7451 100644
--- a/pkg/configmap/configmap_test.go
+++ b/pkg/configmap/configmap_test.go
@@ -62,7 +62,9 @@ func TestLoad(t *testing.T) {
 
 				unst, err := unstructuredlib.FromString(csvGot)
 				require.NoError(t, err)
-				assert.True(t, unst.GetName() == "first" || unst.GetName() == "second")
+
+				// The last CSV (by lexicographical sort of configmap data keys) always wins.
+				assert.Equal(t, "second", unst.GetName())
 			},
 		},
 		{
@@ -167,7 +169,9 @@ func TestLoadWriteRead(t *testing.T) {
 			bundleObjects, err := unstructuredlib.FromBundle(bundle)
 			require.NoError(t, err)
 
-			assert.ElementsMatch(t, expectedObjects, bundleObjects)
+			// Assert that the order of manifests from the original manifests
+			// directory is preserved (by lexicographical sorting by filename)
+			assert.Equal(t, expectedObjects, bundleObjects)
 		})
 	}
 }