diff --git a/include/dwarfs/filesystem_v2.h b/include/dwarfs/filesystem_v2.h
index 88a8668c..69232642 100644
--- a/include/dwarfs/filesystem_v2.h
+++ b/include/dwarfs/filesystem_v2.h
@@ -124,12 +124,13 @@ class filesystem_v2 {
 
   file_stat getattr(inode_view entry) const { return impl_->getattr(entry); }
 
-  int access(inode_view entry, int mode, uid_t uid, gid_t gid) const {
+  int access(inode_view entry, int mode, file_stat::uid_type uid,
+             file_stat::gid_type gid) const {
     return impl_->access(entry, mode, uid, gid);
   }
 
-  void access(inode_view entry, int mode, uid_t uid, gid_t gid,
-              std::error_code& ec) const {
+  void access(inode_view entry, int mode, file_stat::uid_type uid,
+              file_stat::gid_type gid, std::error_code& ec) const {
     impl_->access(entry, mode, uid, gid, ec);
   }
 
@@ -252,10 +253,10 @@ class filesystem_v2 {
     virtual int getattr(inode_view entry, file_stat* stbuf) const = 0;
     virtual file_stat getattr(inode_view entry, std::error_code& ec) const = 0;
     virtual file_stat getattr(inode_view entry) const = 0;
-    virtual int
-    access(inode_view entry, int mode, uid_t uid, gid_t gid) const = 0;
-    virtual void access(inode_view entry, int mode, uid_t uid, gid_t gid,
-                        std::error_code& ec) const = 0;
+    virtual int access(inode_view entry, int mode, file_stat::uid_type uid,
+                       file_stat::gid_type gid) const = 0;
+    virtual void access(inode_view entry, int mode, file_stat::uid_type uid,
+                        file_stat::gid_type gid, std::error_code& ec) const = 0;
     virtual std::optional<directory_view> opendir(inode_view entry) const = 0;
     virtual std::optional<std::pair<inode_view, std::string>>
     readdir(directory_view dir, size_t offset) const = 0;
diff --git a/include/dwarfs/internal/metadata_v2.h b/include/dwarfs/internal/metadata_v2.h
index 807c7c51..b25b43e2 100644
--- a/include/dwarfs/internal/metadata_v2.h
+++ b/include/dwarfs/internal/metadata_v2.h
@@ -120,7 +120,8 @@ class metadata_v2 {
 
   size_t dirsize(directory_view dir) const { return impl_->dirsize(dir); }
 
-  int access(inode_view iv, int mode, uid_t uid, gid_t gid) const {
+  int access(inode_view iv, int mode, file_stat::uid_type uid,
+             file_stat::gid_type gid) const {
     return impl_->access(iv, mode, uid, gid);
   }
 
@@ -198,7 +199,8 @@ class metadata_v2 {
 
     virtual size_t dirsize(directory_view dir) const = 0;
 
-    virtual int access(inode_view iv, int mode, uid_t uid, gid_t gid) const = 0;
+    virtual int access(inode_view iv, int mode, file_stat::uid_type uid,
+                       file_stat::gid_type gid) const = 0;
 
     virtual int open(inode_view iv) const = 0;
 
diff --git a/src/dwarfs/filesystem_v2.cpp b/src/dwarfs/filesystem_v2.cpp
index 7da18596..1b05c23f 100644
--- a/src/dwarfs/filesystem_v2.cpp
+++ b/src/dwarfs/filesystem_v2.cpp
@@ -442,9 +442,10 @@ class filesystem_ final : public filesystem_v2::impl {
   int getattr(inode_view entry, file_stat* stbuf) const override;
   file_stat getattr(inode_view entry, std::error_code& ec) const override;
   file_stat getattr(inode_view entry) const override;
-  int access(inode_view entry, int mode, uid_t uid, gid_t gid) const override;
-  void access(inode_view entry, int mode, uid_t uid, gid_t gid,
-              std::error_code& ec) const override;
+  int access(inode_view entry, int mode, file_stat::uid_type uid,
+             file_stat::gid_type gid) const override;
+  void access(inode_view entry, int mode, file_stat::uid_type uid,
+              file_stat::gid_type gid, std::error_code& ec) const override;
   std::optional<directory_view> opendir(inode_view entry) const override;
   std::optional<std::pair<inode_view, std::string>>
   readdir(directory_view dir, size_t offset) const override;
@@ -1097,15 +1098,18 @@ file_stat filesystem_<LoggerPolicy>::getattr(inode_view entry) const {
 }
 
 template <typename LoggerPolicy>
-int filesystem_<LoggerPolicy>::access(inode_view entry, int mode, uid_t uid,
-                                      gid_t gid) const {
+int filesystem_<LoggerPolicy>::access(inode_view entry, int mode,
+                                      file_stat::uid_type uid,
+                                      file_stat::gid_type gid) const {
   PERFMON_CLS_SCOPED_SECTION(access)
   return meta_.access(entry, mode, uid, gid);
 }
 
 template <typename LoggerPolicy>
-void filesystem_<LoggerPolicy>::access(inode_view entry, int mode, uid_t uid,
-                                       gid_t gid, std::error_code& ec) const {
+void filesystem_<LoggerPolicy>::access(inode_view entry, int mode,
+                                       file_stat::uid_type uid,
+                                       file_stat::gid_type gid,
+                                       std::error_code& ec) const {
   PERFMON_CLS_SCOPED_SECTION(access_ec)
   call_int_error([&] { return meta_.access(entry, mode, uid, gid); }, ec);
 }
diff --git a/src/dwarfs/internal/metadata_v2.cpp b/src/dwarfs/internal/metadata_v2.cpp
index 75cc7153..51882d4d 100644
--- a/src/dwarfs/internal/metadata_v2.cpp
+++ b/src/dwarfs/internal/metadata_v2.cpp
@@ -494,7 +494,8 @@ class metadata_ final : public metadata_v2::impl {
     return 2 + dir.entry_count(); // adds '.' and '..', which we fake in ;-)
   }
 
-  int access(inode_view iv, int mode, uid_t uid, gid_t gid) const override;
+  int access(inode_view iv, int mode, file_stat::uid_type uid,
+             file_stat::gid_type gid) const override;
 
   int open(inode_view iv) const override;
 
@@ -1614,8 +1615,9 @@ metadata_<LoggerPolicy>::readdir(directory_view dir, size_t offset) const {
 }
 
 template <typename LoggerPolicy>
-int metadata_<LoggerPolicy>::access(inode_view iv, int mode, uid_t uid,
-                                    gid_t gid) const {
+int metadata_<LoggerPolicy>::access(inode_view iv, int mode,
+                                    file_stat::uid_type uid,
+                                    file_stat::gid_type gid) const {
   LOG_DEBUG << fmt::format("access([{}, {:o}, {}, {}], {:o}, {}, {})",
                            iv.inode_num(), iv.mode(), iv.getuid(), iv.getgid(),
                            mode, uid, gid);
diff --git a/src/dwarfs_main.cpp b/src/dwarfs_main.cpp
index 1636982b..c6ea02ab 100644
--- a/src/dwarfs_main.cpp
+++ b/src/dwarfs_main.cpp
@@ -456,7 +456,8 @@ int op_getattr(char const* path, native_stat* st, struct fuse_file_info*) {
 
 template <typename LogProxy, typename Find>
 int op_access_common(LogProxy& log_, dwarfs_userdata& userdata, int mode,
-                     uid_t uid, gid_t gid, Find const& find) {
+                     file_stat::uid_type uid, file_stat::gid_type gid,
+                     Find const& find) {
   return checked_call(log_, [&] {
     if (auto entry = find()) {
       return userdata.fs.access(*entry, mode, uid, gid);