diff --git a/tools/chunks/catchunks/pipeline-interests-cubic.hpp b/tools/chunks/catchunks/pipeline-interests-cubic.hpp
index 4f058c7..8670ccd 100644
--- a/tools/chunks/catchunks/pipeline-interests-cubic.hpp
+++ b/tools/chunks/catchunks/pipeline-interests-cubic.hpp
@@ -55,7 +55,7 @@
  * This implementation follows the RFC8312 https://tools.ietf.org/html/rfc8312
  * and the Linux kernel implementation https://github.com/torvalds/linux/blob/master/net/ipv4/tcp_cubic.c
  */
-class PipelineInterestsCubic : public PipelineInterestsAdaptive
+class PipelineInterestsCubic final : public PipelineInterestsAdaptive
 {
 public:
   using Options = PipelineInterestsCubicOptions;