diff --git a/README.md b/README.md
index a1d0f29..d78a119 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,7 @@ Manifestoo is a command line tool that provides the following features:
 
 * listing addons,
 * listing direct and transitive dependencies of selected addons,
+* listing direct and transitive co-dependencies of selected addons,
 * listing core Odoo CE and EE addons,
 * listing external dependencies,
 * listing missing dependencies,
@@ -84,6 +85,14 @@ $ manifestoo -d /tmp/myaddons list-depends --separator=,
 crm,mail
 ```
 
+The `list-codepends` command shows the transitive co-dependencies.
+It is handy to know which modules are impacted by changes in selected modules.
+
+```console
+$ manifestoo --addons-path /tmp/myaddons --select a list-codepends --separator=,
+b,c
+```
+
 You can explore the dependency tree of module `a` like this:
 
 ```console
diff --git a/src/manifestoo/commands/list_codepends.py b/src/manifestoo/commands/list_codepends.py
new file mode 100644
index 0000000..4438cb5
--- /dev/null
+++ b/src/manifestoo/commands/list_codepends.py
@@ -0,0 +1,29 @@
+from typing import Iterable, Set
+
+from ..addons_selection import AddonsSelection
+from ..addons_set import AddonsSet
+
+
+def list_codepends_command(
+    addons_selection: AddonsSelection,
+    addons_set: AddonsSet,
+    transitive: bool = True,
+    include_selected: bool = True,
+) -> Iterable[str]:
+    result: Set[str] = set(addons_selection) if include_selected else set()
+    codeps = direct_codependencies(addons_selection, addons_set, result)
+    result |= codeps
+    while transitive and codeps:
+        codeps = direct_codependencies(codeps, addons_set, result)
+        result |= codeps
+    return result if include_selected else result - addons_selection
+
+
+def direct_codependencies(
+    root_addons: Set[str], addons_set: AddonsSet, accumulator: Set[str]
+) -> Set[str]:
+    return {
+        a
+        for a in addons_set
+        if set(addons_set[a].manifest.depends) & root_addons and a not in accumulator
+    }
diff --git a/src/manifestoo/main.py b/src/manifestoo/main.py
index 76b985e..eace382 100644
--- a/src/manifestoo/main.py
+++ b/src/manifestoo/main.py
@@ -7,6 +7,7 @@
 from .commands.check_dev_status import check_dev_status_command
 from .commands.check_licenses import check_licenses_command
 from .commands.list import list_command
+from .commands.list_codepends import list_codepends_command
 from .commands.list_depends import list_depends_command
 from .commands.list_external_dependencies import list_external_dependencies_command
 from .commands.tree import tree_command
@@ -253,6 +254,36 @@ def list_depends(
     )
 
 
+@app.command()
+def list_codepends(
+    ctx: typer.Context,
+    separator: Optional[str] = typer.Option(
+        None,
+        help="Separator character to use (by default, print one item per line).",
+    ),
+    transitive: bool = typer.Option(
+        True,
+        "--transitive",
+        help="Print all transitive co-dependencies.",
+    ),
+    include_selected: bool = typer.Option(
+        True,
+        "--include-selected",
+        help="Print the selected addons along with their co-dependencies"
+        "(the set of addons that depends on the set of selected addons).",
+    ),
+) -> None:
+    """Print the co-dependencies of selected addons."""
+    main_options: MainOptions = ctx.obj
+    result = list_codepends_command(
+        main_options.addons_selection,
+        main_options.addons_set,
+        transitive,
+        include_selected,
+    )
+    print_list(result, separator or main_options.separator or "\n")
+
+
 @app.command()
 def list_external_dependencies(
     ctx: typer.Context,