diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4300f73c..767544df 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -334,7 +334,7 @@ set(Boost_USE_MULTITHREADED ON)
 set(Boost_USE_STATIC_RUNTIME ${USE_STATIC_RUNTIME})
 
 set(Boost_ADDITIONALVERSION "1.51" "1.51.0")
-find_package(Boost COMPONENTS system filesystem regex REQUIRED)
+find_package(Boost COMPONENTS system regex REQUIRED)
 
 set(GLEW_USE_STATIC_LIBS ${GLEW_STATIC})
 find_package(GLEW REQUIRED)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c47bec95..1be04262 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -504,7 +504,6 @@ target_link_libraries(colobotbase PUBLIC
     GLEW::GLEW
     glm::glm
     Boost::headers
-    Boost::filesystem
     Boost::regex
     PhysFS::PhysFS
     SndFile::sndfile
diff --git a/src/app/modman.cpp b/src/app/modman.cpp
index 94a7be04..31b2d25f 100644
--- a/src/app/modman.cpp
+++ b/src/app/modman.cpp
@@ -32,12 +32,10 @@
 #include "level/parser/parser.h"
 
 #include <algorithm>
+#include <filesystem>
 #include <map>
-#include <boost/filesystem.hpp>
 #include <boost/algorithm/string.hpp>
 
-using namespace boost::filesystem;
-
 CModManager::CModManager(CApplication* app, CPathManager* pathManager)
     : m_app{app},
       m_pathManager{pathManager}
@@ -74,7 +72,7 @@ void CModManager::FindMods()
     std::map<std::string, std::string> modPaths;
     for (const auto& path : rawPaths)
     {
-        auto modName = boost::filesystem::path(path).stem().string();
+        auto modName = std::filesystem::path(path).stem().string();
         modPaths.insert(std::make_pair(modName, path));
     }
 
diff --git a/src/app/pathman.cpp b/src/app/pathman.cpp
index f9d2135b..d093984a 100644
--- a/src/app/pathman.cpp
+++ b/src/app/pathman.cpp
@@ -18,24 +18,23 @@
  */
 
 
+#include "app/app.h"
 #include "app/pathman.h"
 
 #include "common/config.h"
-
-#include "app/app.h"
-
-
 #include "common/logger.h"
 
 #include "common/resources/resourcemanager.h"
 
 #include "common/system/system.h"
+
 #ifdef PLATFORM_WINDOWS
     #include "common/system/system_windows.h"
 #endif
 
 #include <boost/algorithm/string.hpp>
-#include <boost/filesystem.hpp>
+
+#include <filesystem>
 
 CPathManager::CPathManager(CSystemUtils* systemUtils)
     : m_dataPath(systemUtils->GetDataPath())
@@ -81,12 +80,9 @@ const std::string& CPathManager::GetSavePath()
 
 std::string CPathManager::VerifyPaths()
 {
-    #if PLATFORM_WINDOWS
-    boost::filesystem::path dataPath(CSystemUtilsWindows::UTF8_Decode(m_dataPath));
-    #else
-    boost::filesystem::path dataPath(m_dataPath);
-    #endif
-    if (! (boost::filesystem::exists(dataPath) && boost::filesystem::is_directory(dataPath)) )
+    std::filesystem::path dataPath = std::filesystem::u8path(m_dataPath);
+
+    if (! (std::filesystem::exists(dataPath) && std::filesystem::is_directory(dataPath)) )
     {
         GetLogger()->Error("Data directory '%s' doesn't exist or is not a directory\n", m_dataPath.c_str());
         return std::string("Could not read from data directory:\n") +
@@ -94,23 +90,15 @@ std::string CPathManager::VerifyPaths()
             std::string("Please check your installation, or supply a valid data directory by -datadir option.");
     }
 
-    #if PLATFORM_WINDOWS
-    boost::filesystem::path langPath(CSystemUtilsWindows::UTF8_Decode(m_langPath));
-    #else
-    boost::filesystem::path langPath(m_langPath);
-    #endif
-    if (! (boost::filesystem::exists(langPath) && boost::filesystem::is_directory(langPath)) )
+    std::filesystem::path langPath = std::filesystem::u8path(m_langPath);
+
+    if (! (std::filesystem::exists(langPath) && std::filesystem::is_directory(langPath)) )
     {
         GetLogger()->Warn("Language path '%s' is invalid, assuming translation files not installed\n", m_langPath.c_str());
     }
 
-    #if PLATFORM_WINDOWS
-    boost::filesystem::create_directories(CSystemUtilsWindows::UTF8_Decode(m_savePath));
-    boost::filesystem::create_directories(CSystemUtilsWindows::UTF8_Decode(m_savePath+"/mods"));
-    #else
-    boost::filesystem::create_directories(m_savePath);
-    boost::filesystem::create_directories(m_savePath+"/mods");
-    #endif
+    std::filesystem::create_directories(std::filesystem::u8path(m_savePath));
+    std::filesystem::create_directories(std::filesystem::u8path(m_savePath + "/mods"));
 
     return "";
 }
@@ -159,9 +147,10 @@ std::vector<std::string> CPathManager::FindMods() const
         }
     }
     GetLogger()->Info("Additional mod paths:\n");
+
     for (const auto& modPath : m_mods)
     {
-        if (boost::filesystem::exists(modPath))
+        if (std::filesystem::exists(modPath))
         {
             GetLogger()->Info("  * %s\n", modPath.c_str());
             mods.push_back(modPath);
@@ -184,18 +173,11 @@ std::vector<std::string> CPathManager::FindModsInDir(const std::string &dir) con
     std::vector<std::string> ret;
     try
     {
-        #if PLATFORM_WINDOWS
-        boost::filesystem::directory_iterator iterator(CSystemUtilsWindows::UTF8_Decode(dir));
-        #else
-        boost::filesystem::directory_iterator iterator(dir);
-        #endif
-        for(; iterator != boost::filesystem::directory_iterator(); ++iterator)
+        std::filesystem::directory_iterator iterator(std::filesystem::u8path(dir));
+
+        for(; iterator != std::filesystem::directory_iterator(); ++iterator)
         {
-            #if PLATFORM_WINDOWS
-            ret.push_back(CSystemUtilsWindows::UTF8_Encode(iterator->path().wstring()));
-            #else
-            ret.push_back(iterator->path().string());
-            #endif
+            ret.push_back(iterator->path().u8string());
         }
     }
     catch (std::exception &e)
diff --git a/src/common/system/system_macosx.cpp b/src/common/system/system_macosx.cpp
index d53cd406..a362e7c1 100644
--- a/src/common/system/system_macosx.cpp
+++ b/src/common/system/system_macosx.cpp
@@ -28,7 +28,7 @@
 #include <CoreFoundation/CFBundle.h>
 #include <CoreServices/CoreServices.h>
 
-#include <boost/filesystem.hpp>
+#include <filesystem>
 
 inline std::string CFStringRefToStdString(CFStringRef str) {
 
@@ -78,7 +78,7 @@ void CSystemUtilsMacOSX::Init()
     m_ASPath.append("/colobot/");
 
     // Make sure the directory exists
-    boost::filesystem::create_directories(m_ASPath.c_str());
+    std::filesystem::create_directories(m_ASPath.c_str());
 
     // Get the Resources bundle URL
     CFBundleRef mainBundle = CFBundleGetMainBundle();
diff --git a/src/common/system/system_windows.cpp b/src/common/system/system_windows.cpp
index 7d9f3c70..97f6fb01 100644
--- a/src/common/system/system_windows.cpp
+++ b/src/common/system/system_windows.cpp
@@ -21,9 +21,9 @@
 
 #include "common/logger.h"
 
-#include <boost/filesystem.hpp>
 #include <windows.h>
 
+#include <filesystem>
 
 void CSystemUtilsWindows::Init()
 {
@@ -132,7 +132,7 @@ std::string CSystemUtilsWindows::GetEnvVar(const std::string& name)
 
 bool CSystemUtilsWindows::OpenPath(const std::string& path)
 {
-    int result = system(("start explorer \"" + boost::filesystem::path(path).make_preferred().string() + "\"").c_str());
+    int result = system(("start explorer \"" + std::filesystem::u8path(path).make_preferred().string() + "\"").c_str());
     if (result != 0)
     {
         GetLogger()->Error("Failed to open path: %s, error code: %i\n", path.c_str(), result);