diff --git a/pkg/loader/compose/v3.go b/pkg/loader/compose/v3.go
index 10bb3367..94e1ecfa 100644
--- a/pkg/loader/compose/v3.go
+++ b/pkg/loader/compose/v3.go
@@ -635,6 +635,26 @@ func mergeComposeObject(oldCompose *types.Config, newCompose *types.Config) (*ty
 		oldCompose.Services[index] = tmpOldService
 	}
 
+	// Merge the networks information
+	for idx, network := range newCompose.Networks {
+		oldCompose.Networks[idx] = network
+	}
+
+	// Merge the volumes information
+	for idx, volume := range newCompose.Volumes {
+		oldCompose.Volumes[idx] = volume
+	}
+
+	// Merge the secrets information
+	for idx, secret := range newCompose.Secrets {
+		oldCompose.Secrets[idx] = secret
+	}
+
+	// Merge the configs information
+	for idx, config := range newCompose.Configs {
+		oldCompose.Configs[idx] = config
+	}
+
 	return oldCompose, nil
 }
 
diff --git a/script/test/cmd/tests.sh b/script/test/cmd/tests.sh
index d4dcf45b..e61b7e8f 100755
--- a/script/test/cmd/tests.sh
+++ b/script/test/cmd/tests.sh
@@ -140,6 +140,17 @@ cmd="kompose --provider=openshift convert -f $KOMPOSE_ROOT/script/test/fixtures/
 sed -e "s;%VERSION%;$version;g" -e "s;%CMD%;$cmd;g"  $KOMPOSE_ROOT/script/test/fixtures/merge-multiple-compose/output-openshift-template.json > /tmp/output-os.json
 convert::expect_success "$cmd" "/tmp/output-os.json"
 
+# Test other top level keys
+# In merge
+cmd="kompose convert -f $KOMPOSE_ROOT/script/test/fixtures/merge-multiple-compose/other-toplevel-dev.yml -f $KOMPOSE_ROOT/script/test/fixtures/merge-multiple-compose/other-toplevel-ext.yml --stdout -j"
+sed -e "s;%VERSION%;$version;g" -e "s;%CMD%;$cmd;g"  $KOMPOSE_ROOT/script/test/fixtures/merge-multiple-compose/output-other-toplevel-merge-template.json > /tmp/output-k8s.json
+convert::expect_success "$cmd" "/tmp/output-k8s.json"
+
+# In Override
+cmd="kompose convert -f $KOMPOSE_ROOT/script/test/fixtures/merge-multiple-compose/other-toplevel-base.yml -f $KOMPOSE_ROOT/script/test/fixtures/merge-multiple-compose/other-toplevel-override.yml --stdout -j"
+sed -e "s;%VERSION%;$version;g" -e "s;%CMD%;$cmd;g"  $KOMPOSE_ROOT/script/test/fixtures/merge-multiple-compose/output-other-toplevel-override-template.json > /tmp/output-k8s.json
+convert::expect_success "$cmd" "/tmp/output-k8s.json"
+
 ######
 # Tests related to docker-compose file in /script/test/fixtures/ports-with-proto
 # kubernetes test
diff --git a/script/test/fixtures/merge-multiple-compose/first_config.txt b/script/test/fixtures/merge-multiple-compose/first_config.txt
new file mode 100644
index 00000000..5af95a1b
--- /dev/null
+++ b/script/test/fixtures/merge-multiple-compose/first_config.txt
@@ -0,0 +1 @@
+First config
diff --git a/script/test/fixtures/merge-multiple-compose/other-toplevel-base.yml b/script/test/fixtures/merge-multiple-compose/other-toplevel-base.yml
new file mode 100644
index 00000000..18f5db9a
--- /dev/null
+++ b/script/test/fixtures/merge-multiple-compose/other-toplevel-base.yml
@@ -0,0 +1,15 @@
+version: "3.3"
+
+services:
+  other-toplevel-base:
+    image: nginx
+    volumes:
+      - firstvolume:/var/www/nginx
+    configs:
+      - source: firstconfig
+        target: /etc/nginx.conf
+        mode: 644
+
+configs:
+  firstconfig:
+    file: ./first_config.txt
diff --git a/script/test/fixtures/merge-multiple-compose/other-toplevel-dev.yml b/script/test/fixtures/merge-multiple-compose/other-toplevel-dev.yml
new file mode 100644
index 00000000..b2ffc033
--- /dev/null
+++ b/script/test/fixtures/merge-multiple-compose/other-toplevel-dev.yml
@@ -0,0 +1,20 @@
+version: "3.3"
+
+services:
+  other-toplevel-dev:
+    image: nginx
+    volumes:
+      - firstvolume:/var/www/nginx
+    configs:
+      - source: firstconfig
+        target: /etc/nginx.conf
+        mode: 644
+
+volumes:
+  firstvolume:
+    driver_opts:
+      type: "nfs"
+
+configs:
+  firstconfig:
+    file: ./first_config.txt
diff --git a/script/test/fixtures/merge-multiple-compose/other-toplevel-ext.yml b/script/test/fixtures/merge-multiple-compose/other-toplevel-ext.yml
new file mode 100644
index 00000000..3aeacb60
--- /dev/null
+++ b/script/test/fixtures/merge-multiple-compose/other-toplevel-ext.yml
@@ -0,0 +1,19 @@
+version: "3.3"
+
+services:
+  other-toplevel-second:
+    image: nginx
+    volumes:
+      - secondvolume:/var/www/nginx
+    configs:
+      - source: secondconfig
+        target: /etc/nginx.conf
+        mode: 644
+
+volumes:
+  secondvolume:
+    external: true
+
+configs:
+  secondconfig:
+    file: ./second_config.txt
diff --git a/script/test/fixtures/merge-multiple-compose/other-toplevel-override.yml b/script/test/fixtures/merge-multiple-compose/other-toplevel-override.yml
new file mode 100644
index 00000000..7ce65d05
--- /dev/null
+++ b/script/test/fixtures/merge-multiple-compose/other-toplevel-override.yml
@@ -0,0 +1,9 @@
+version: "3.3"
+
+volumes:
+  firstvolume:
+    external: true
+
+configs:
+  firstconfig:
+    file: ./second_config.txt
diff --git a/script/test/fixtures/merge-multiple-compose/output-other-toplevel-merge-template.json b/script/test/fixtures/merge-multiple-compose/output-other-toplevel-merge-template.json
new file mode 100644
index 00000000..2d3cfa7a
--- /dev/null
+++ b/script/test/fixtures/merge-multiple-compose/output-other-toplevel-merge-template.json
@@ -0,0 +1,217 @@
+{
+  "kind": "List",
+  "apiVersion": "v1",
+  "metadata": {},
+  "items": [
+    {
+      "kind": "ConfigMap",
+      "apiVersion": "v1",
+      "metadata": {
+        "name": "firstconfig",
+        "creationTimestamp": null,
+        "labels": {
+          "io.kompose.service": "other-toplevel-dev"
+        }
+      },
+      "data": {
+        "first-config.txt": "First config\n"
+      }
+    },
+    {
+      "kind": "Deployment",
+      "apiVersion": "extensions/v1beta1",
+      "metadata": {
+        "name": "other-toplevel-dev",
+        "creationTimestamp": null,
+        "labels": {
+          "io.kompose.service": "other-toplevel-dev"
+        },
+        "annotations": {
+          "kompose.cmd": "%CMD%",
+          "kompose.version": "%VERSION%"
+        }
+      },
+      "spec": {
+        "replicas": 1,
+        "template": {
+          "metadata": {
+            "creationTimestamp": null,
+            "labels": {
+              "io.kompose.service": "other-toplevel-dev"
+            },
+            "annotations": {
+							"kompose.cmd": "%CMD%",
+							"kompose.version": "%VERSION%"
+            }
+          },
+          "spec": {
+            "volumes": [
+              {
+                "name": "firstconfig",
+                "configMap": {
+                  "name": "firstconfig",
+                  "defaultMode": 644
+                }
+              },
+              {
+                "name": "firstvolume",
+                "persistentVolumeClaim": {
+                  "claimName": "firstvolume"
+                }
+              }
+            ],
+            "containers": [
+              {
+                "name": "other-toplevel-dev",
+                "image": "nginx",
+                "resources": {},
+                "volumeMounts": [
+                  {
+                    "name": "firstconfig",
+                    "mountPath": "/nginx.conf"
+                  },
+                  {
+                    "name": "firstvolume",
+                    "mountPath": "/var/www/nginx"
+                  }
+                ]
+              }
+            ],
+            "restartPolicy": "Always"
+          }
+        },
+        "strategy": {
+          "type": "Recreate"
+        }
+      },
+      "status": {}
+    },
+    {
+      "kind": "PersistentVolumeClaim",
+      "apiVersion": "v1",
+      "metadata": {
+        "name": "firstvolume",
+        "creationTimestamp": null,
+        "labels": {
+          "io.kompose.service": "firstvolume"
+        }
+      },
+      "spec": {
+        "accessModes": [
+          "ReadWriteOnce"
+        ],
+        "resources": {
+          "requests": {
+            "storage": "100Mi"
+          }
+        }
+      },
+      "status": {}
+    },
+    {
+      "kind": "ConfigMap",
+      "apiVersion": "v1",
+      "metadata": {
+        "name": "secondconfig",
+        "creationTimestamp": null,
+        "labels": {
+          "io.kompose.service": "other-toplevel-second"
+        }
+      },
+      "data": {
+        "second-config.txt": "Second config\n"
+      }
+    },
+    {
+      "kind": "Deployment",
+      "apiVersion": "extensions/v1beta1",
+      "metadata": {
+        "name": "other-toplevel-second",
+        "creationTimestamp": null,
+        "labels": {
+          "io.kompose.service": "other-toplevel-second"
+        },
+        "annotations": {
+					"kompose.cmd": "%CMD%",
+					"kompose.version": "%VERSION%"
+        }
+      },
+      "spec": {
+        "replicas": 1,
+        "template": {
+          "metadata": {
+            "creationTimestamp": null,
+            "labels": {
+              "io.kompose.service": "other-toplevel-second"
+            },
+            "annotations": {
+							"kompose.cmd": "%CMD%",
+							"kompose.version": "%VERSION%"
+            }
+          },
+          "spec": {
+            "volumes": [
+              {
+                "name": "secondconfig",
+                "configMap": {
+                  "name": "secondconfig",
+                  "defaultMode": 644
+                }
+              },
+              {
+                "name": "secondvolume",
+                "persistentVolumeClaim": {
+                  "claimName": "secondvolume"
+                }
+              }
+            ],
+            "containers": [
+              {
+                "name": "other-toplevel-second",
+                "image": "nginx",
+                "resources": {},
+                "volumeMounts": [
+                  {
+                    "name": "secondconfig",
+                    "mountPath": "/nginx.conf"
+                  },
+                  {
+                    "name": "secondvolume",
+                    "mountPath": "/var/www/nginx"
+                  }
+                ]
+              }
+            ],
+            "restartPolicy": "Always"
+          }
+        },
+        "strategy": {
+          "type": "Recreate"
+        }
+      },
+      "status": {}
+    },
+    {
+      "kind": "PersistentVolumeClaim",
+      "apiVersion": "v1",
+      "metadata": {
+        "name": "secondvolume",
+        "creationTimestamp": null,
+        "labels": {
+          "io.kompose.service": "secondvolume"
+        }
+      },
+      "spec": {
+        "accessModes": [
+          "ReadWriteOnce"
+        ],
+        "resources": {
+          "requests": {
+            "storage": "100Mi"
+          }
+        }
+      },
+      "status": {}
+    }
+  ]
+}
diff --git a/script/test/fixtures/merge-multiple-compose/output-other-toplevel-override-template.json b/script/test/fixtures/merge-multiple-compose/output-other-toplevel-override-template.json
new file mode 100644
index 00000000..b7354e1b
--- /dev/null
+++ b/script/test/fixtures/merge-multiple-compose/output-other-toplevel-override-template.json
@@ -0,0 +1,112 @@
+{
+  "kind": "List",
+  "apiVersion": "v1",
+  "metadata": {},
+  "items": [
+    {
+      "kind": "ConfigMap",
+      "apiVersion": "v1",
+      "metadata": {
+        "name": "firstconfig",
+        "creationTimestamp": null,
+        "labels": {
+          "io.kompose.service": "other-toplevel-base"
+        }
+      },
+      "data": {
+        "second-config.txt": "Second config\n"
+      }
+    },
+    {
+      "kind": "Deployment",
+      "apiVersion": "extensions/v1beta1",
+      "metadata": {
+        "name": "other-toplevel-base",
+        "creationTimestamp": null,
+        "labels": {
+          "io.kompose.service": "other-toplevel-base"
+        },
+        "annotations": {
+          "kompose.cmd": "%CMD%",
+          "kompose.version": "%VERSION%"
+        }
+      },
+      "spec": {
+        "replicas": 1,
+        "template": {
+          "metadata": {
+            "creationTimestamp": null,
+            "labels": {
+              "io.kompose.service": "other-toplevel-base"
+            },
+            "annotations": {
+							"kompose.cmd": "%CMD%",
+							"kompose.version": "%VERSION%"
+            }
+          },
+          "spec": {
+            "volumes": [
+              {
+                "name": "firstconfig",
+                "configMap": {
+                  "name": "firstconfig",
+                  "defaultMode": 644
+                }
+              },
+              {
+                "name": "firstvolume",
+                "persistentVolumeClaim": {
+                  "claimName": "firstvolume"
+                }
+              }
+            ],
+            "containers": [
+              {
+                "name": "other-toplevel-base",
+                "image": "nginx",
+                "resources": {},
+                "volumeMounts": [
+                  {
+                    "name": "firstconfig",
+                    "mountPath": "/nginx.conf"
+                  },
+                  {
+                    "name": "firstvolume",
+                    "mountPath": "/var/www/nginx"
+                  }
+                ]
+              }
+            ],
+            "restartPolicy": "Always"
+          }
+        },
+        "strategy": {
+          "type": "Recreate"
+        }
+      },
+      "status": {}
+    },
+    {
+      "kind": "PersistentVolumeClaim",
+      "apiVersion": "v1",
+      "metadata": {
+        "name": "firstvolume",
+        "creationTimestamp": null,
+        "labels": {
+          "io.kompose.service": "firstvolume"
+        }
+      },
+      "spec": {
+        "accessModes": [
+          "ReadWriteOnce"
+        ],
+        "resources": {
+          "requests": {
+            "storage": "100Mi"
+          }
+        }
+      },
+      "status": {}
+    }
+  ]
+}
diff --git a/script/test/fixtures/merge-multiple-compose/second_config.txt b/script/test/fixtures/merge-multiple-compose/second_config.txt
new file mode 100644
index 00000000..edd602b2
--- /dev/null
+++ b/script/test/fixtures/merge-multiple-compose/second_config.txt
@@ -0,0 +1 @@
+Second config