diff --git a/config.py b/config.py
index 6889ee2f..71b95e5c 100644
--- a/config.py
+++ b/config.py
@@ -996,6 +996,7 @@ class LinuxConfig(AbstractConfig):
             raise ValueError(f'Unexpected type for value {type(val)=}')
 
         self.config.set(self.SECTION, key, to_set)
+        self.save()
 
     def delete(self, key: str, *, suppress=False) -> None:
         """
@@ -1007,6 +1008,7 @@ class LinuxConfig(AbstractConfig):
             raise ValueError('attempt to use a closed config')
 
         self.config.remove_option(self.SECTION, key)
+        self.save()
 
     def save(self) -> None:
         """
diff --git a/tests/config.py/test_config.py b/tests/config.py/test_config.py
index 4e484a2f..0d10a3c2 100644
--- a/tests/config.py/test_config.py
+++ b/tests/config.py/test_config.py
@@ -137,6 +137,7 @@ class TestNewConfig:
 
         assert res == '1337'
         config.delete(name)
+        config.save()
 
 
 class TestOldNewConfig: