diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index aac7aae..516db7e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -27,30 +27,3 @@ jobs:
         run: cmake --build build
       - name: Run tests
         run: ctest --output-on-failure --test-dir build
-
-  test-modules:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os:
-          - ubuntu-24.04
-          - windows-2022
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v3
-      - name: Configure CMake (LLVM Clang)
-        if: ${{ matrix.os == 'ubuntu-24.04' }}
-        run: |
-          sudo apt install ninja-build
-          cmake -B build \
-                -DTMP_USE_MODULES:BOOL=ON \
-                -DCMAKE_CXX_COMPILER=clang++-17 \
-                -G Ninja
-      - name: Configure CMake (MSVC)
-        if: ${{ matrix.os == 'windows-2022' }}
-        run: cmake -B build -DTMP_USE_MODULES:BOOL=ON
-      - name: Build tests
-        run: cmake --build build
-      - name: Run tests
-        run: ctest --output-on-failure --test-dir build
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 236b7d0..80b66c3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,11 +1,6 @@
 cmake_minimum_required(VERSION 3.14)
 project(tmp VERSION 0.9)
 
-option(TMP_USE_MODULES "Build C++20 modules" OFF)
-if(TMP_USE_MODULES)
-    cmake_minimum_required(VERSION 3.28)
-endif()
-
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/")
 
 include(GNUInstallDirs)
@@ -14,15 +9,6 @@ find_package(Filesystem REQUIRED)
 add_library(${PROJECT_NAME} STATIC src/tmp.cpp)
 target_compile_features(${PROJECT_NAME} PUBLIC cxx_std_17)
 
-if(TMP_USE_MODULES)
-    target_compile_features(${PROJECT_NAME} PUBLIC cxx_std_20)
-    target_sources(
-        ${PROJECT_NAME}
-        PUBLIC FILE_SET CXX_MODULES
-               FILES src/tmp.cppm
-               BASE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/src)
-endif()
-
 target_link_libraries(${PROJECT_NAME} PUBLIC std::filesystem)
 set_target_properties(${PROJECT_NAME} PROPERTIES EXPORT_NAME tmp)
 target_include_directories(
@@ -61,9 +47,7 @@ if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
 
     install(
         TARGETS ${PROJECT_NAME}
-        EXPORT tmp-targets
-        FILE_SET CXX_MODULES
-        DESTINATION ${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME})
+        EXPORT tmp-targets)
     install(
         EXPORT tmp-targets
         FILE tmp-targets.cmake
diff --git a/src/tmp.cppm b/src/tmp.cppm
deleted file mode 100644
index dfcdfed..0000000
--- a/src/tmp.cppm
+++ /dev/null
@@ -1,14 +0,0 @@
-module;
-
-#include <tmp/directory>
-#include <tmp/entry>
-#include <tmp/file>
-
-export module tmp;
-
-export namespace tmp {
-
-using tmp::directory;
-using tmp::entry;
-using tmp::file;
-}    // namespace tmp
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 05070b2..7a709c5 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -5,9 +5,7 @@ find_package(GTest)
 add_executable(${PROJECT_NAME} directory.cpp file.cpp)
 target_link_libraries(${PROJECT_NAME} tmp::tmp GTest::gtest_main)
 target_compile_definitions(
-    ${PROJECT_NAME}
-    PRIVATE PREFIX="com.github.bugdea1er.tmp"
-            $<$<BOOL:${TMP_USE_MODULES}>:TMP_USE_MODULES>)
+    ${PROJECT_NAME} PRIVATE PREFIX="com.github.bugdea1er.tmp")
 
 include(GoogleTest)
 gtest_discover_tests(${PROJECT_NAME} EXTRA_ARGS --gtest_color=yes)
diff --git a/tests/directory.cpp b/tests/directory.cpp
index 3da3dc5..7b191e6 100644
--- a/tests/directory.cpp
+++ b/tests/directory.cpp
@@ -1,9 +1,5 @@
-#ifdef TMP_USE_MODULES
-import tmp;
-#else
 #include <tmp/directory>
 #include <tmp/file>
-#endif
 
 #include <gtest/gtest.h>
 
diff --git a/tests/file.cpp b/tests/file.cpp
index 5e0e63c..9ed824e 100644
--- a/tests/file.cpp
+++ b/tests/file.cpp
@@ -1,9 +1,5 @@
-#ifdef TMP_USE_MODULES
-import tmp;
-#else
 #include <tmp/directory>
 #include <tmp/file>
-#endif
 
 #include <gtest/gtest.h>