diff --git a/Toolchain/CMake/ClangToolchain.txt.in b/Toolchain/CMake/ClangToolchain.txt.in
index 5a52bd3ee8..9a5b786542 100644
--- a/Toolchain/CMake/ClangToolchain.txt.in
+++ b/Toolchain/CMake/ClangToolchain.txt.in
@@ -1,7 +1,3 @@
-if (${CMAKE_VERSION} VERSION_LESS "3.25.0")
-  list(APPEND CMAKE_MODULE_PATH "@SERENITY_SOURCE_DIR@/Toolchain/CMake")
-endif()
-
 set(CMAKE_SYSTEM_NAME SerenityOS)
 set(CMAKE_SYSTEM_PROCESSOR "@SERENITY_ARCH@")
 
diff --git a/Toolchain/CMake/GNUToolchain.txt.in b/Toolchain/CMake/GNUToolchain.txt.in
index 05bd67a188..c9860fd597 100644
--- a/Toolchain/CMake/GNUToolchain.txt.in
+++ b/Toolchain/CMake/GNUToolchain.txt.in
@@ -1,7 +1,3 @@
-if (${CMAKE_VERSION} VERSION_LESS "3.25.0")
-  list(APPEND CMAKE_MODULE_PATH "@SERENITY_SOURCE_DIR@/Toolchain/CMake")
-endif()
-
 set(CMAKE_SYSTEM_NAME SerenityOS)
 set(CMAKE_SYSTEM_PROCESSOR "@SERENITY_ARCH@")
 
diff --git a/Toolchain/CMake/Platform/README.md b/Toolchain/CMake/Platform/README.md
deleted file mode 100644
index b64fa66fff..0000000000
--- a/Toolchain/CMake/Platform/README.md
+++ /dev/null
@@ -1,4 +0,0 @@
-
-This directory contains Platform files for CMake to identify flags for SerenityOS when ``CMAKE_SYSTEM_NAME`` is "SerenityOS".
-
-Please keep these files in sync with upstream ``Modules/Platform/SerenityOS*.cmake`` in https://gitlab.kitware.com/cmake/cmake
diff --git a/Toolchain/CMake/Platform/SerenityOS-Clang-ASM.cmake b/Toolchain/CMake/Platform/SerenityOS-Clang-ASM.cmake
deleted file mode 100644
index ba1e18cfec..0000000000
--- a/Toolchain/CMake/Platform/SerenityOS-Clang-ASM.cmake
+++ /dev/null
@@ -1,2 +0,0 @@
-include(Platform/SerenityOS-GNU)
-__serenity_compiler_gnu(ASM)
diff --git a/Toolchain/CMake/Platform/SerenityOS-Clang-C.cmake b/Toolchain/CMake/Platform/SerenityOS-Clang-C.cmake
deleted file mode 100644
index 791a1978dc..0000000000
--- a/Toolchain/CMake/Platform/SerenityOS-Clang-C.cmake
+++ /dev/null
@@ -1,2 +0,0 @@
-include(Platform/SerenityOS-GNU)
-__serenity_compiler_gnu(C)
diff --git a/Toolchain/CMake/Platform/SerenityOS-Clang-CXX.cmake b/Toolchain/CMake/Platform/SerenityOS-Clang-CXX.cmake
deleted file mode 100644
index 084e319fa9..0000000000
--- a/Toolchain/CMake/Platform/SerenityOS-Clang-CXX.cmake
+++ /dev/null
@@ -1,2 +0,0 @@
-include(Platform/SerenityOS-GNU)
-__serenity_compiler_gnu(CXX)
diff --git a/Toolchain/CMake/Platform/SerenityOS-GNU-ASM.cmake b/Toolchain/CMake/Platform/SerenityOS-GNU-ASM.cmake
deleted file mode 100644
index ba1e18cfec..0000000000
--- a/Toolchain/CMake/Platform/SerenityOS-GNU-ASM.cmake
+++ /dev/null
@@ -1,2 +0,0 @@
-include(Platform/SerenityOS-GNU)
-__serenity_compiler_gnu(ASM)
diff --git a/Toolchain/CMake/Platform/SerenityOS-GNU-C.cmake b/Toolchain/CMake/Platform/SerenityOS-GNU-C.cmake
deleted file mode 100644
index 791a1978dc..0000000000
--- a/Toolchain/CMake/Platform/SerenityOS-GNU-C.cmake
+++ /dev/null
@@ -1,2 +0,0 @@
-include(Platform/SerenityOS-GNU)
-__serenity_compiler_gnu(C)
diff --git a/Toolchain/CMake/Platform/SerenityOS-GNU-CXX.cmake b/Toolchain/CMake/Platform/SerenityOS-GNU-CXX.cmake
deleted file mode 100644
index 084e319fa9..0000000000
--- a/Toolchain/CMake/Platform/SerenityOS-GNU-CXX.cmake
+++ /dev/null
@@ -1,2 +0,0 @@
-include(Platform/SerenityOS-GNU)
-__serenity_compiler_gnu(CXX)
diff --git a/Toolchain/CMake/Platform/SerenityOS-GNU.cmake b/Toolchain/CMake/Platform/SerenityOS-GNU.cmake
deleted file mode 100644
index ed39477a8c..0000000000
--- a/Toolchain/CMake/Platform/SerenityOS-GNU.cmake
+++ /dev/null
@@ -1,24 +0,0 @@
-# This module is shared by multiple languages; use include blocker.
-include_guard()
-
-set(CMAKE_EXE_LINKER_FLAGS_INIT "-Wl,--hash-style=gnu,-z,relro,-z,now,-z,noexecstack,-z,separate-code,-z,max-page-size=0x1000")
-
-macro(__serenity_compiler_gnu lang)
-  set(CMAKE_SHARED_LIBRARY_RUNTIME_${lang}_FLAG "-Wl,-rpath,")
-  set(CMAKE_SHARED_LIBRARY_RUNTIME_${lang}_FLAG_SEP ":")
-  set(CMAKE_SHARED_LIBRARY_RPATH_LINK_${lang}_FLAG "-Wl,-rpath-link,")
-  set(CMAKE_SHARED_LIBRARY_SONAME_${lang}_FLAG "-Wl,-soname,")
-  set(CMAKE_EXE_EXPORTS_${lang}_FLAG "-Wl,--export-dynamic")
-
-  set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-shared -Wl,--hash-style=gnu,-z,relro,-z,now,-z,noexecstack,-z,separate-code")
-
-  # Initialize link type selection flags.  These flags are used when
-  # building a shared library, shared module, or executable that links
-  # to other libraries to select whether to use the static or shared
-  # versions of the libraries.
-  foreach(type SHARED_LIBRARY SHARED_MODULE EXE)
-    set(CMAKE_${type}_LINK_STATIC_${lang}_FLAGS "-Wl,-Bstatic")
-    set(CMAKE_${type}_LINK_DYNAMIC_${lang}_FLAGS "-Wl,-Bdynamic")
-  endforeach()
-
-endmacro()
diff --git a/Toolchain/CMake/Platform/SerenityOS.cmake b/Toolchain/CMake/Platform/SerenityOS.cmake
deleted file mode 100644
index dc4f369dc0..0000000000
--- a/Toolchain/CMake/Platform/SerenityOS.cmake
+++ /dev/null
@@ -1,12 +0,0 @@
-
-set(SERENITYOS 1)
-
-set(CMAKE_DL_LIBS "")
-set(CMAKE_SHARED_LIBRARY_RPATH_ORIGIN_TOKEN "\$ORIGIN")
-set(CMAKE_SHARED_LIBRARY_SUFFIX ".so")
-
-# Shared libraries with no builtin soname may not be linked safely by
-# specifying the file path.
-set(CMAKE_PLATFORM_USES_PATH_WHEN_NO_SONAME 1)
-
-include(Platform/UnixPaths)