diff --git a/0001-Revert-CMake-Make-glslang-default-resource-limits-ST.patch b/0001-Revert-CMake-Make-glslang-default-resource-limits-ST.patch
new file mode 100644
index 0000000..76afac9
--- /dev/null
+++ b/0001-Revert-CMake-Make-glslang-default-resource-limits-ST.patch
@@ -0,0 +1,23 @@
+From 949e46a187d4d97d6a63495ba76438523f021015 Mon Sep 17 00:00:00 2001
+From: Jan Engelhardt <jengelh@inai.de>
+Date: Wed, 23 Aug 2023 00:16:04 +0200
+Subject: [PATCH] Revert "CMake: Make glslang-default-resource-limits STATIC"
+
+This reverts commit 6f22e41e0de13aff75807cca9662730d8b3e54b6.
+---
+ glslang/CMakeLists.txt |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+Index: glslang-sdk-1.3.261.0/glslang/CMakeLists.txt
+===================================================================
+--- glslang-sdk-1.3.261.0.orig/glslang/CMakeLists.txt
++++ glslang-sdk-1.3.261.0/glslang/CMakeLists.txt
+@@ -195,7 +195,7 @@ set(RESOURCELIMITS_HEADERS
+   Public/resource_limits_c.h
+ )
+ 
+-add_library(glslang-default-resource-limits STATIC ${RESOURCELIMITS_SOURCES} ${RESOURCELIMITS_HEADERS})
++add_library(glslang-default-resource-limits ${RESOURCELIMITS_SOURCES} ${RESOURCELIMITS_HEADERS})
+ set_target_properties(glslang-default-resource-limits PROPERTIES
+     VERSION "${GLSLANG_VERSION}"
+     SOVERSION "${GLSLANG_VERSION_MAJOR}"
diff --git a/12.2.0.tar.gz b/12.2.0.tar.gz
deleted file mode 100644
index 81294e1..0000000
--- a/12.2.0.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:870d17030fda7308c1521fb2e01a9e93cbe4b130bc8274e90d00e127432ab6f6
-size 3706316
diff --git a/glslang.changes b/glslang.changes
index 5716c1d..6da01f4 100644
--- a/glslang.changes
+++ b/glslang.changes
@@ -1,3 +1,13 @@
+-------------------------------------------------------------------
+Tue Aug 22 10:09:15 UTC 2023 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to release 12.3.1+SDK-1.3.261.0
+  * Add support for pre and post HLSL qualifier validation
+  * HLSL: support binary literals
+  * Implement support for GL_KHR_cooperative_matrix extension
+  * Remove OSDependent TLS functions
+- Add 0001-Revert-CMake-Make-glslang-default-resource-limits-ST.patch
+
 -------------------------------------------------------------------
 Mon May 29 10:38:28 UTC 2023 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/glslang.spec b/glslang.spec
index b03fa01..af32fb8 100644
--- a/glslang.spec
+++ b/glslang.spec
@@ -18,15 +18,16 @@
 
 %define lname libglslang12
 Name:           glslang
-Version:        12.2.0
+Version:        12.3.1+sdk261
 Release:        0
 Summary:        OpenGL and OpenGL ES shader front end and validator
 License:        BSD-3-Clause
 Group:          Development/Libraries/C and C++
 URL:            https://www.khronos.org/opengles/sdk/tools/Reference-Compiler/
 #Git-URL:	https://github.com/KhronosGroup/glslang
-Source:         https://github.com/KhronosGroup/glslang/archive/%version.tar.gz
+Source:         https://github.com/KhronosGroup/glslang/archive/sdk-1.3.261.0.tar.gz
 Source3:        baselibs.conf
+Patch1:         0001-Revert-CMake-Make-glslang-default-resource-limits-ST.patch
 BuildRequires:  bison
 BuildRequires:  cmake >= 3.14.0
 BuildRequires:  fdupes
@@ -80,10 +81,11 @@ This package contains additional headers that are not officially installed,
 but which some downstream packages rely on.
 
 %prep
-%autosetup -p1
+%autosetup -p1 -n %name-sdk-1.3.261.0
 
 %build
 %global _lto_cflags %{?_lto_cflags} -ffat-lto-objects
+# ABI keeps on breaking (gh#3052 #3311 #3312)
 echo "V_%version { global: *; };" >/tmp/z.sym
 # Trim -Wl,--no-undefined for now (https://github.com/KhronosGroup/glslang/issues/1484)
 %cmake -DCMAKE_SHARED_LINKER_FLAGS="-Wl,--as-needed -Wl,-z,now"
@@ -118,6 +120,7 @@ comm -13 "$od/devel.files" "$od/devel_full.files" >"$od/devel2.files"
 
 # 3rd party programs use -lOGLCompiler (because pristine glslang shipped .a files),
 # so satisfy them under our shared build.
+mkdir -p "$b/%_libdir"
 for i in libOGLCompiler libOSDependent libGenericCodeGen libMachineIndependent; do
 	ln -s libglslang.so "$b/%_libdir/$i.so"
 	rm -f "$b/%_libdir/$i.a"
@@ -135,7 +138,6 @@ done
 %_bindir/gls*
 %_bindir/spirv*
 %_libdir/cmake/
-%_libdir/*resource*.so
 %_libdir/libGenericCodeGen.so
 %_libdir/libHLSL.so
 %_libdir/libMachineIndependent.so
@@ -144,6 +146,7 @@ done
 %_libdir/libSPIRV.so
 %_libdir/libSPVRemapper.so
 %_libdir/libglslang.so
+%_libdir/libglslang-default-resource-limits.so
 
 %files nonstd-devel -f devel2.files
 
diff --git a/sdk-1.3.261.0.tar.gz b/sdk-1.3.261.0.tar.gz
new file mode 100644
index 0000000..af45ef3
--- /dev/null
+++ b/sdk-1.3.261.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:19fd5c35ec62d7584189e4c4f73378d4343eb655c49818e4bd8a408d6b822f60
+size 3705459