diff --git a/qt6-qtshadertools.spec b/qt6-qtshadertools.spec
index 3bd8337..ae1a4ee 100644
--- a/qt6-qtshadertools.spec
+++ b/qt6-qtshadertools.spec
@@ -11,7 +11,7 @@
 Summary: Qt6 - Qt Shader Tools module builds on the SPIR-V Open Source Ecosystem
 Name:    qt6-%{qt_module}
 Version: 6.8.1
-Release: 3%{?dist}
+Release: 4%{?dist}
 
 License: LGPL-3.0-only OR GPL-3.0-only WITH Qt-GPL-exception-1.0
 Url:     http://www.qt.io
@@ -24,6 +24,9 @@ Source0: https://download.qt.io/development_releases/qt/%{majmin}/%{qt_version}/
 Source0: https://download.qt.io/official_releases/qt/%{majmin}/%{version}/submodules/%{qt_module}-everywhere-src-%{version}.tar.xz
 %endif
 
+# Downstream patches
+Patch0: qtshadertools-unbundle-glslang.patch
+
 # Upstream patches
 
 # Upstreamable patches
@@ -34,8 +37,12 @@ BuildRequires: ninja-build
 BuildRequires: qt6-qtbase-devel >= %{version}
 BuildRequires: qt6-qtbase-private-devel
 %{?_qt6:Requires: %{_qt6}%{?_isa} = %{_qt6_version}}
+BuildRequires: glslang-devel
+BuildRequires: spirv-tools-devel
 BuildRequires: pkgconfig(xkbcommon) >= 0.4.1
 
+Provides: bundled(spirv-cross)
+
 %description
 %{summary}.
 
@@ -59,6 +66,10 @@ Requires: %{name}%{?_isa} = %{version}-%{release}
 %prep
 %autosetup -n %{qt_module}-everywhere-src-%{qt_version}%{?unstable:-%{prerelease}} -p1
 
+# Make sure 3rdparty/glslang isn't used
+pushd src/3rdparty
+rm -rf glslang
+popd
 
 %build
 %cmake_qt6 \
@@ -133,6 +144,10 @@ popd
 %endif
 
 %changelog
+* Fri Jan 24 2025 Jan Grulich <jgrulich@redhat.com> - 6.8.1-4
+- Unbundle glslang
+  Resolves: RHEL-76115
+
 * Wed Jan 15 2025 Jan Grulich <jgrulich@redhat.com> - 6.8.1-3
 - Add spirv-tools as a dependency to -devel
   Resolves: RHEL-74028
diff --git a/qtshadertools-unbundle-glslang.patch b/qtshadertools-unbundle-glslang.patch
new file mode 100644
index 0000000..5d493b3
--- /dev/null
+++ b/qtshadertools-unbundle-glslang.patch
@@ -0,0 +1,91 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index e68166a..97c942e 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -15,6 +15,15 @@ project(QtShaderTools
+ 
+ find_package(Qt6 ${PROJECT_VERSION} CONFIG REQUIRED COMPONENTS BuildInternals Core)
+ find_package(Qt6 ${PROJECT_VERSION} QUIET CONFIG OPTIONAL_COMPONENTS Gui)
++
++find_package(PkgConfig QUIET)
++pkg_check_modules(PC_glslang QUIET "glslang")
++pkg_check_modules(PC_spirv_tools QUIET "SPIRV-Tools")
++find_library(GLSLANG_RESOURCE_LIMITS_LIBRARY
++    NAMES libglslang-default-resource-limits.a
++    PATHS /usr/lib /usr/lib64
++    NO_DEFAULT_PATH
++)
+ qt_internal_project_setup()
+ 
+ if(INTEGRITY)
+diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
+index cb0e25d..6a22710 100644
+--- a/src/CMakeLists.txt
++++ b/src/CMakeLists.txt
+@@ -3,6 +3,6 @@
+ 
+ # Generated from src.pro.
+ 
+-add_subdirectory(glslang)
++# add_subdirectory(glslang)
+ add_subdirectory(SPIRV-Cross)
+ add_subdirectory(shadertools)
+diff --git a/src/shadertools/CMakeLists.txt b/src/shadertools/CMakeLists.txt
+index 04371a5..4a652bb 100644
+--- a/src/shadertools/CMakeLists.txt
++++ b/src/shadertools/CMakeLists.txt
+@@ -20,15 +20,15 @@ qt_internal_add_module(ShaderTools
+     DEFINES
+         QT_BUILD_SHADERTOOLS_LIB
+     INCLUDE_DIRECTORIES
++        ${PC_glslang_INCLUDE_DIRS}
+         ../3rdparty/SPIRV-Cross
+-        ../3rdparty/glslang
+     LIBRARIES
+         Qt::GuiPrivate
+ # special case begin
+         Qt::BundledSpirv_Cross
+-        Qt::BundledGlslang_Glslang
+-        Qt::BundledGlslang_Spirv
+-        Qt::BundledGlslang_Osdependent
++        ${PC_glslang_LINK_LIBRARIES}
++        ${PC_spirv_tools_LINK_LIBRARIES}
++        ${GLSLANG_RESOURCE_LIMITS_LIBRARY}
+ # special case end
+     PUBLIC_LIBRARIES
+         Qt::Core
+diff --git a/src/shadertools/qspirvcompiler.cpp b/src/shadertools/qspirvcompiler.cpp
+index 4e97d48..b6fefb8 100644
+--- a/src/shadertools/qspirvcompiler.cpp
++++ b/src/shadertools/qspirvcompiler.cpp
+@@ -10,7 +10,7 @@ QT_WARNING_PUSH
+ QT_WARNING_DISABLE_GCC("-Wsuggest-override")
+ #include <glslang/Public/ShaderLang.h>
+ #include <glslang/Public/ResourceLimits.h>
+-#include <SPIRV/GlslangToSpv.h>
++#include <glslang/SPIRV/GlslangToSpv.h>
+ QT_WARNING_POP
+ 
+ //#define TOKENIZER_DEBUG
+@@ -47,8 +47,6 @@ bool QSpirvCompilerPrivate::readFile(const QString &fn)
+     return true;
+ }
+ 
+-using namespace QtShaderTools;
+-
+ class Includer : public glslang::TShader::Includer
+ {
+ public:
+diff --git a/src/shadertools/qspirvshaderremap.cpp b/src/shadertools/qspirvshaderremap.cpp
+index e45161d..d8d4bfe 100644
+--- a/src/shadertools/qspirvshaderremap.cpp
++++ b/src/shadertools/qspirvshaderremap.cpp
+@@ -3,7 +3,7 @@
+ 
+ #include "qspirvshaderremap_p.h"
+ 
+-#include <SPIRV/SPVRemapper.h>
++#include <glslang/SPIRV/SPVRemapper.h>
+ 
+ QT_BEGIN_NAMESPACE
+