diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 97b5db4..d59df83 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,7 +1,6 @@
 cmake_minimum_required(VERSION 3.16)
 
 add_library(archive SHARED)
-mo2_configure_library(archive
-    WARNINGS OFF PRIVATE_DEPENDS 7z fmt)
+mo2_configure_library(archive WARNINGS OFF PRIVATE_DEPENDS 7z)
 target_compile_definitions(archive PRIVATE -DMODORGANIZER_ARCHIVE_BUILDING)
 mo2_install_target(archive)
diff --git a/src/archive.cpp b/src/archive.cpp
index 9583fad..52d899e 100644
--- a/src/archive.cpp
+++ b/src/archive.cpp
@@ -301,7 +301,7 @@ ArchiveImpl::ArchiveImpl()
     m_Valid = true;
     return;
   } catch (std::exception const& e) {
-    m_LogCallback(LogLevel::Error, fmt::format(L"Caught exception {}.", e));
+    m_LogCallback(LogLevel::Error, std::format(L"Caught exception {}.", e));
     m_LastError = Error::ERROR_LIBRARY_INVALID;
   }
 }
@@ -371,12 +371,12 @@ bool ArchiveImpl::open(std::wstring const& archiveName,
 
         if (m_ArchivePtr->Open(file, 0, openCallbackPtr) != S_OK) {
           m_LogCallback(LogLevel::Debug,
-                        fmt::format(L"Failed to open {} using {} (from signature).",
+                        std::format(L"Failed to open {} using {} (from signature).",
                                     archiveName, signatureInfo.second.m_Name));
           m_ArchivePtr.Release();
         } else {
           m_LogCallback(LogLevel::Debug,
-                        fmt::format(L"Opened {} using {} (from signature).",
+                        std::format(L"Opened {} using {} (from signature).",
                                     archiveName, signatureInfo.second.m_Name));
 
           // Retrieve the extension (warning: .extension() contains the dot):
@@ -433,12 +433,12 @@ bool ArchiveImpl::open(std::wstring const& archiveName,
 
             if (m_ArchivePtr->Open(file, 0, openCallbackPtr) != S_OK) {
               m_LogCallback(LogLevel::Debug,
-                            fmt::format(L"Failed to open {} using {} (from signature).",
+                            std::format(L"Failed to open {} using {} (from signature).",
                                         archiveName, format.m_Name));
               m_ArchivePtr.Release();
             } else {
               m_LogCallback(LogLevel::Debug,
-                            fmt::format(L"Opened {} using {} (from signature).",
+                            std::format(L"Opened {} using {} (from signature).",
                                         archiveName, format.m_Name));
               break;
             }
@@ -457,7 +457,7 @@ bool ArchiveImpl::open(std::wstring const& archiveName,
           }
           m_LogCallback(
               LogLevel::Warning,
-              fmt::format(L"The format(s) expected for this extension are: {}.",
+              std::format(L"The format(s) expected for this extension are: {}.",
                           ArchiveStrings::join(vformats, L", ")));
         }
       }
@@ -478,7 +478,7 @@ bool ArchiveImpl::open(std::wstring const& archiveName,
       }
       if (m_ArchivePtr->Open(file, 0, openCallbackPtr) == S_OK) {
         m_LogCallback(LogLevel::Debug,
-                      fmt::format(L"Opened {} using {} (from signature).", archiveName,
+                      std::format(L"Opened {} using {} (from signature).", archiveName,
                                   format.m_Name));
         m_LogCallback(LogLevel::Warning,
                       L"This archive likely has an incorrect extension.");
diff --git a/src/extractcallback.cpp b/src/extractcallback.cpp
index 3ad0181..fff51cd 100644
--- a/src/extractcallback.cpp
+++ b/src/extractcallback.cpp
@@ -20,17 +20,15 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
 #include <Unknwn.h>
 
-#include <fmt/format.h>
-#include <fmt/xchar.h>
+#include <filesystem>
+#include <format>
+#include <stdexcept>
+#include <string>
 
 #include "archive.h"
 #include "extractcallback.h"
 #include "propertyvariant.h"
 
-#include <filesystem>
-#include <stdexcept>
-#include <string>
-
 std::wstring operationResultToString(Int32 operationResult)
 {
   namespace R = NArchive::NExtract::NOperationResult;
@@ -67,7 +65,7 @@ std::wstring operationResultToString(Int32 operationResult)
     return L"Wrong password";
 
   default:
-    return fmt::format(L"Unknown error {}", operationResult);
+    return std::format(L"Unknown error {}", operationResult);
   }
 }
 
@@ -127,7 +125,7 @@ bool CArchiveExtractCallback::getOptionalProperty(UInt32 index, int property,
   PropertyVariant prop;
   if (m_ArchiveHandler->GetProperty(index, property, &prop) != S_OK) {
     m_LogCallback(Archive::LogLevel::Error,
-                  fmt::format(L"Error getting property {}.", property));
+                  std::format(L"Error getting property {}.", property));
     return false;
   }
   if (prop.is_empty()) {
@@ -143,7 +141,7 @@ bool CArchiveExtractCallback::getProperty(UInt32 index, int property, T* result)
   PropertyVariant prop;
   if (m_ArchiveHandler->GetProperty(index, property, &prop) != S_OK) {
     m_LogCallback(Archive::LogLevel::Error,
-                  fmt::format(L"Error getting property {}.", property));
+                  std::format(L"Error getting property {}.", property));
     return false;
   }
 
@@ -243,7 +241,7 @@ STDMETHODIMP CArchiveExtractCallback::GetStream(UInt32 index,
       auto fileSizeFound = getOptionalProperty(index, kpidSize, &fileSize);
       if (fileSizeFound && m_OutputFileStream->SetSize(fileSize) != S_OK) {
         m_LogCallback(Archive::LogLevel::Error,
-                      fmt::format(L"SetSize() failed on {}.", m_FullProcessedPaths[0]));
+                      std::format(L"SetSize() failed on {}.", m_FullProcessedPaths[0]));
       }
 
       // This is messy but I can't find another way of doing it. A simple
@@ -260,7 +258,7 @@ STDMETHODIMP CArchiveExtractCallback::GetStream(UInt32 index,
     return S_OK;
   } catch (std::exception const& e) {
     m_LogCallback(Archive::LogLevel::Error,
-                  fmt::format(L"Caught exception {} in GetStream.", e));
+                  std::format(L"Caught exception {} in GetStream.", e));
   }
   return E_FAIL;
 }
diff --git a/src/extractcallback.h b/src/extractcallback.h
index 1b61dfa..c69737e 100644
--- a/src/extractcallback.h
+++ b/src/extractcallback.h
@@ -24,15 +24,13 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 #include <atomic>
 #include <chrono>
 #include <filesystem>
+#include <format>
 
 #include "7zip/Archive/IArchive.h"
 #include "7zip/IPassword.h"
 
 #include <atlbase.h>
 
-#include <fmt/format.h>
-#include <fmt/xchar.h>
-
 #include "archive.h"
 #include "formatter.h"
 #include "instrument.h"
@@ -73,9 +71,9 @@ class CArchiveExtractCallback : public IArchiveExtractCallback,
   void reportError(const std::wstring& message);
 
   template <class... Args>
-  void reportError(const wchar_t* format, Args&&... args)
+  void reportError(std::wformat_string<Args...> format, Args&&... args)
   {
-    reportError(fmt::format(format, std::forward<Args>(args)...));
+    reportError(std::format(format, std::forward<Args>(args)...));
   }
 
   template <typename T>
diff --git a/src/formatter.h b/src/formatter.h
index 0a8cad7..24d2c36 100644
--- a/src/formatter.h
+++ b/src/formatter.h
@@ -25,62 +25,55 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 // exposed outside of the library. It also contains some useful methods for
 // string manipulation.
 
-#include <fmt/format.h>
+#include <format>
 
 #include <cwctype>
 #include <filesystem>
 #include <stdexcept>
 #include <string>
 
-// Specializing fmt::formatter works, but gives warning, for whatever reason... So
-// putting everything in the namespace.
-namespace fmt
-{
-
-// I don't know why fmt does not provide this...
 template <>
-struct formatter<std::string, wchar_t> : formatter<std::wstring, wchar_t>
+struct std::formatter<std::string, wchar_t> : std::formatter<std::wstring, wchar_t>
 {
   template <typename FormatContext>
-  auto format(std::string const& s, FormatContext& ctx)
+  auto format(std::string const& s, FormatContext& ctx) const
   {
-    return formatter<std::wstring, wchar_t>::format(std::wstring(s.begin(), s.end()),
-                                                    ctx);
+    return std::formatter<std::wstring, wchar_t>::format(
+        std::wstring(s.begin(), s.end()), ctx);
   }
 };
 
 template <>
-struct formatter<std::exception, wchar_t> : formatter<std::string, wchar_t>
+struct std::formatter<std::exception, wchar_t> : std::formatter<std::string, wchar_t>
 {
   template <typename FormatContext>
-  auto format(std::exception const& ex, FormatContext& ctx)
+  auto format(std::exception const& ex, FormatContext& ctx) const
   {
-    return formatter<std::string, wchar_t>::format(ex.what(), ctx);
+    return std::formatter<std::string, wchar_t>::format(ex.what(), ctx);
   }
 };
 
 template <>
-struct formatter<std::error_code, wchar_t> : formatter<std::string, wchar_t>
+struct std::formatter<std::error_code, wchar_t> : std::formatter<std::string, wchar_t>
 {
   template <typename FormatContext>
-  auto format(std::error_code const& ec, FormatContext& ctx)
+  auto format(std::error_code const& ec, FormatContext& ctx) const
   {
-    return formatter<std::string, wchar_t>::format(ec.message(), ctx);
+    return std::formatter<std::string, wchar_t>::format(ec.message(), ctx);
   }
 };
 
 template <>
-struct formatter<std::filesystem::path, wchar_t> : formatter<std::wstring, wchar_t>
+struct std::formatter<std::filesystem::path, wchar_t>
+    : std::formatter<std::wstring, wchar_t>
 {
   template <typename FormatContext>
-  auto format(std::filesystem::path const& path, FormatContext& ctx)
+  auto format(std::filesystem::path const& path, FormatContext& ctx) const
   {
-    return formatter<std::wstring, wchar_t>::format(path.native(), ctx);
+    return std::formatter<std::wstring, wchar_t>::format(path.native(), ctx);
   }
 };
 
-}  // namespace fmt
-
 namespace ArchiveStrings
 {
 
diff --git a/src/instrument.h b/src/instrument.h
index 8bbf85a..82dc3f7 100644
--- a/src/instrument.h
+++ b/src/instrument.h
@@ -22,8 +22,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 #define ARCHIVE_INSTRUMENT_H
 
 #include <chrono>
-
-#include <fmt/format.h>
+#include <format>
 
 namespace ArchiveTimers
 {
@@ -87,7 +86,7 @@ class Timer
     auto ms = [](auto&& t) {
       return std::chrono::duration<double, std::milli>(t);
     };
-    return fmt::format(
+    return std::format(
         L"Instrument '{}': {} calls, total of {}ms, {:.3f}ms per call on average.",
         name, ncalls, ms(time).count(), ms(time).count() / ncalls);
   }
diff --git a/src/opencallback.cpp b/src/opencallback.cpp
index 95e3619..1bf8f97 100644
--- a/src/opencallback.cpp
+++ b/src/opencallback.cpp
@@ -26,6 +26,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
 #include <atlbase.h>
 
+#include <format>
 #include <memory>
 #include <stdexcept>
 #include <string>
@@ -33,9 +34,6 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
 #include "fileio.h"
 
-#include <fmt/format.h>
-#include <fmt/xchar.h>
-
 #define UNUSED(x)
 
 CArchiveOpenCallback::CArchiveOpenCallback(Archive::PasswordCallback passwordCallback,
@@ -130,7 +128,7 @@ STDMETHODIMP CArchiveOpenCallback::GetProperty(PROPID propID, PROPVARIANT* value
 
   default:
     m_LogCallback(Archive::LogLevel::Warning,
-                  fmt::format(L"Unexpected property {}.", propID));
+                  std::format(L"Unexpected property {}.", propID));
   }
   return S_OK;
 }