diff --git a/src/poetry/console/commands/add.py b/src/poetry/console/commands/add.py
index 053e655b30c..b1387bd7ca9 100644
--- a/src/poetry/console/commands/add.py
+++ b/src/poetry/console/commands/add.py
@@ -125,9 +125,7 @@ def handle(self) -> int:
             section = poetry_content["dependencies"]
         else:
             if "group" not in poetry_content:
-                poetry_content.value._insert_after(
-                    "dependencies", "group", table(is_super_table=True)
-                )
+                poetry_content["group"] = table(is_super_table=True)
 
             groups = poetry_content["group"]
             if group not in groups:
diff --git a/tests/console/commands/test_remove.py b/tests/console/commands/test_remove.py
index b65f2c9a955..020732d3abe 100644
--- a/tests/console/commands/test_remove.py
+++ b/tests/console/commands/test_remove.py
@@ -67,9 +67,7 @@ def test_remove_without_specific_group_removes_from_all_groups(
 """
     )
     content["tool"]["poetry"]["dependencies"]["foo"] = "^2.0.0"
-    content["tool"]["poetry"].value._insert_after(
-        "dependencies", "group", groups_content["tool"]["poetry"]["group"]
-    )
+    content["tool"]["poetry"]["group"] = groups_content["tool"]["poetry"]["group"]
     app.poetry.file.write(content)
 
     app.poetry.package.add_dependency(Factory.create_dependency("foo", "^2.0.0"))
@@ -128,9 +126,7 @@ def test_remove_without_specific_group_removes_from_specific_groups(
 """
     )
     content["tool"]["poetry"]["dependencies"]["foo"] = "^2.0.0"
-    content["tool"]["poetry"].value._insert_after(
-        "dependencies", "group", groups_content["tool"]["poetry"]["group"]
-    )
+    content["tool"]["poetry"]["group"] = groups_content["tool"]["poetry"]["group"]
     app.poetry.file.write(content)
 
     app.poetry.package.add_dependency(Factory.create_dependency("foo", "^2.0.0"))
@@ -189,9 +185,7 @@ def test_remove_does_not_live_empty_groups(
 """
     )
     content["tool"]["poetry"]["dependencies"]["foo"] = "^2.0.0"
-    content["tool"]["poetry"].value._insert_after(
-        "dependencies", "group", groups_content["tool"]["poetry"]["group"]
-    )
+    content["tool"]["poetry"]["group"] = groups_content["tool"]["poetry"]["group"]
     app.poetry.file.write(content)
 
     app.poetry.package.add_dependency(Factory.create_dependency("foo", "^2.0.0"))