diff --git a/container/plugins/root/bitcoin/bitcoin.cc b/container/plugins/root/bitcoin/bitcoin.cc
index 62f9ced..2d498f2 100644
--- a/container/plugins/root/bitcoin/bitcoin.cc
+++ b/container/plugins/root/bitcoin/bitcoin.cc
@@ -46,7 +46,7 @@ inline std::string get_repo_path()
 //! \brief Pluggable entrypoint
 //! \ingroup cpp_plugin_impl
 //! \since docker-finance 1.1.0
-class bitcoin_cc
+class bitcoin_cc final
 {
  public:
   bitcoin_cc() = default;
diff --git a/container/plugins/root/example/example.cc b/container/plugins/root/example/example.cc
index f89ddbf..ad6f32b 100644
--- a/container/plugins/root/example/example.cc
+++ b/container/plugins/root/example/example.cc
@@ -44,7 +44,7 @@ namespace example
 //! \brief Pluggable entrypoint
 //! \ingroup cpp_plugin_impl
 //! \since docker-finance 1.1.0
-class example_cc
+class example_cc final
 {
  public:
   example_cc() = default;