diff --git a/CMakeLists.txt b/CMakeLists.txt
index 31606b0..d8de23b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.25)
-project(blt-gp VERSION 0.1.49)
+project(blt-gp VERSION 0.1.50)
 
 include(CTest)
 
diff --git a/include/blt/gp/program.h b/include/blt/gp/program.h
index ad2af8c..fca001d 100644
--- a/include/blt/gp/program.h
+++ b/include/blt/gp/program.h
@@ -128,7 +128,6 @@ namespace blt::gp
 
 //                largest = largest * largest_argc;
                 blt::size_t largest = largest_args * largest_argc * largest_returns * largest_argc;
-                BLT_TRACE(largest);
                 
                 storage.eval_func = [&operators..., largest](const tree_t& tree, void* context) -> evaluation_context& {
                     const auto& ops = tree.get_operations();
diff --git a/include/blt/gp/stack.h b/include/blt/gp/stack.h
index 19e8489..4a883ab 100644
--- a/include/blt/gp/stack.h
+++ b/include/blt/gp/stack.h
@@ -49,7 +49,7 @@ namespace blt::gp
             constexpr static blt::size_t MAX_ALIGNMENT = 8;
             template<typename T>
             using NO_REF_T = std::remove_cv_t<std::remove_reference_t<T>>;
-            using Allocator = variable_bump_allocator<>;
+            using Allocator = aligned_allocator;
         public:
             static Allocator& get_allocator();