diff --git a/PrusaSlicer.changes b/PrusaSlicer.changes
index 8eed262..dccf533 100644
--- a/PrusaSlicer.changes
+++ b/PrusaSlicer.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Tue Jan 31 18:34:16 UTC 2023 - Ben Greiner <code@bnavigator.de>
+
+- Add gentoo-887055-boost-fix.patch
+  * Fix build error with boost-filesystem 1.81
+  * gh#prusa3d/PrusaSlicer#9294
+  * https://bugs.gentoo.org/887055
+
 -------------------------------------------------------------------
 Sun Jan  1 17:25:36 UTC 2023 - Ben Greiner <code@bnavigator.de>
 
diff --git a/PrusaSlicer.spec b/PrusaSlicer.spec
index 61c79ec..7a67ff0 100644
--- a/PrusaSlicer.spec
+++ b/PrusaSlicer.spec
@@ -28,8 +28,10 @@ Source0:        https://github.com/prusa3d/PrusaSlicer/archive/version_%{version
 Patch0:         PrusaSlicer-boost1.79.patch
 # PATCH-FIX-UPSTREAM PrusaSlicer-cereal.patch -- gh#prusa3d/PrusaSlicer#7809
 Patch1:         PrusaSlicer-cereal.patch
+# PATCH-FIX-UPSTREAM gentoo-887055-boost-fix.patch -- gh#prusa3d/PrusaSlicer#9294
+Patch2:         gentoo-887055-boost-fix.patch
 # PATCH-FIX-OPENSUSE up-occt-version.patch mike.chikov@gmail.com -- install wrapper so into libdir, not bindir
-Patch2:         up-occt-version.patch
+Patch3:         up-occt-version.patch
 BuildRequires:  blosc-devel
 BuildRequires:  cereal-devel
 BuildRequires:  cgal-devel >= 4.13.2
diff --git a/gentoo-887055-boost-fix.patch b/gentoo-887055-boost-fix.patch
new file mode 100644
index 0000000..83ce0cc
--- /dev/null
+++ b/gentoo-887055-boost-fix.patch
@@ -0,0 +1,49 @@
+From 6a714bb602a25290d2aedf74eb1232fb9efd5979 Mon Sep 17 00:00:00 2001
+From: Piotr Karbowski <slashbeast@gentoo.org>
+Date: Tue, 27 Dec 2022 21:11:19 +0100
+Subject: media-gfx/prusaslicer: fix building with boost-1.81.
+
+Patch contributed by Bradley Jarvis.
+
+Closes: https://bugs.gentoo.org/887055
+Signed-off-by: Piotr Karbowski <slashbeast@gentoo.org>
+--- a/src/slic3r/GUI/PrintHostDialogs.cpp	2022-12-21 10:21:43.583075853 +1100
++++ b/src/slic3r/GUI/PrintHostDialogs.cpp	2022-12-21 10:23:03.902694287 +1100
+@@ -79,8 +79,8 @@ PrintHostSendDialog::PrintHostSendDialog
+     if (size_t extension_start = recent_path.find_last_of('.'); extension_start != std::string::npos)
+         m_valid_suffix = recent_path.substr(extension_start);
+     // .gcode suffix control
+-    auto validate_path = [this](const wxString &path) -> bool {
+-        if (! path.Lower().EndsWith(m_valid_suffix.Lower())) {
++    auto validate_path = [this](const std::wstring &path) -> bool {
++        if (! wxString(path).Lower().EndsWith(m_valid_suffix.Lower())) {
+             MessageDialog msg_wingow(this, wxString::Format(_L("Upload filename doesn't end with \"%s\". Do you wish to continue?"), m_valid_suffix), wxString(SLIC3R_APP_NAME), wxYES | wxNO);
+             if (msg_wingow.ShowModal() == wxID_NO)
+                 return false;
+@@ -90,7 +90,7 @@ PrintHostSendDialog::PrintHostSendDialog
+ 
+     auto* btn_ok = add_button(wxID_OK, true, _L("Upload"));
+     btn_ok->Bind(wxEVT_BUTTON, [this, validate_path](wxCommandEvent&) {
+-        if (validate_path(txt_filename->GetValue())) {
++        if (validate_path(txt_filename->GetValue().ToStdWstring())) {
+             post_upload_action = PrintHostPostUploadAction::None;
+             EndDialog(wxID_OK);
+         }
+@@ -100,7 +100,7 @@ PrintHostSendDialog::PrintHostSendDialog
+     if (post_actions.has(PrintHostPostUploadAction::StartPrint)) {
+         auto* btn_print = add_button(wxID_YES, false, _L("Upload and Print"));
+         btn_print->Bind(wxEVT_BUTTON, [this, validate_path](wxCommandEvent&) {
+-            if (validate_path(txt_filename->GetValue())) {
++            if (validate_path(txt_filename->GetValue().ToStdWstring())) {
+                 post_upload_action = PrintHostPostUploadAction::StartPrint;
+                 EndDialog(wxID_OK);
+             }
+@@ -111,7 +111,7 @@ PrintHostSendDialog::PrintHostSendDialog
+         // Using wxID_MORE as a button identifier to be different from the other buttons, wxID_MORE has no other meaning here.
+         auto* btn_simulate = add_button(wxID_MORE, false, _L("Upload and Simulate"));
+         btn_simulate->Bind(wxEVT_BUTTON, [this, validate_path](wxCommandEvent&) {
+-            if (validate_path(txt_filename->GetValue())) {
++            if (validate_path(txt_filename->GetValue().ToStdWstring())) {
+                 post_upload_action = PrintHostPostUploadAction::StartSimulation;
+                 EndDialog(wxID_OK);
+             }