diff --git a/bmc/meson.build b/bmc/meson.build
index 461d03c..3d9e5e6 100644
--- a/bmc/meson.build
+++ b/bmc/meson.build
@@ -1,7 +1,7 @@
 bmc_inc = include_directories('.')
 
 common_pre = declare_dependency(
-  dependencies: [function2_dep, json_dep],
+  dependencies: [json_dep],
   include_directories: [root_inc, bmc_inc])
 
 common_lib = static_library(
diff --git a/meson.build b/meson.build
index 1f31026..c45a49b 100644
--- a/meson.build
+++ b/meson.build
@@ -129,26 +129,6 @@
 blobs_dep = dependency('phosphor-ipmi-blobs')
 
 cpp = meson.get_compiler('cpp')
-# Function2 might not have a pkg-config. It is header only so just make
-# sure we can access the needed symbols from the header.
-function2_dep = dependency('function2', required: false)
-has_function2 = cpp.has_header_symbol(
-  'function2/function2.hpp',
-  'fu2::unique_function',
-  dependencies: function2_dep,
-  required: false)
-if not has_function2
-  function2_opts = import('cmake').subproject_options()
-  function2_opts.add_cmake_defines({'BUILD_TESTING': 'OFF'})
-  function2_proj = import('cmake').subproject(
-    'function2',
-    options: function2_opts,
-    required: false)
-  assert(function2_proj.found(), 'function2 is required')
-  if function2_proj.found()
-    function2_dep = function2_proj.dependency('function2')
-  endif
-endif
 
 if cpp.has_header('nlohmann/json.hpp')
     json_dep = declare_dependency()
diff --git a/status.hpp b/status.hpp
index e3342d2..821d09c 100644
--- a/status.hpp
+++ b/status.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
-#include <function2/function2.hpp>
-
 #include <cstdint>
+#include <functional>
 
 namespace ipmi_flash
 {
@@ -19,7 +18,7 @@
 class TriggerableActionInterface
 {
   public:
-    using Callback = fu2::unique_function<void(TriggerableActionInterface&)>;
+    using Callback = std::move_only_function<void(TriggerableActionInterface&)>;
 
     virtual ~TriggerableActionInterface() = default;
 
diff --git a/subprojects/function2.wrap b/subprojects/function2.wrap
deleted file mode 100644
index 3e495a8..0000000
--- a/subprojects/function2.wrap
+++ /dev/null
@@ -1,3 +0,0 @@
-[wrap-git]
-url = https://github.com/Naios/function2
-revision = HEAD
diff --git a/tools/meson.build b/tools/meson.build
index 58fff65..826d04c 100644
--- a/tools/meson.build
+++ b/tools/meson.build
@@ -5,8 +5,7 @@
   dependency('pciaccess', fallback: ['pciaccess', 'dep_pciaccess']),
   dependency('stdplus', fallback: ['stdplus', 'stdplus_dep']),
   blobs_dep,
-  sys_dep,
-  function2_dep]
+  sys_dep]
 
 updater_lib = static_library(
   'updater_lib',