diff --git a/11.1.0.tar.gz b/11.1.0.tar.gz
new file mode 100644
index 0000000..e55bedd
--- /dev/null
+++ b/11.1.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a47f1f9ed17a1f53a074fef20787110ef49522c6de68b218db68d04a81d649c5
+size 3284512
diff --git a/_service b/_service
deleted file mode 100644
index 6292d03..0000000
--- a/_service
+++ /dev/null
@@ -1,14 +0,0 @@
-<services>
-	<service name="tar_scm" mode="disabled">
- 		<param name="scm">git</param>
-		<param name="url">https://github.com/KhronosGroup/glslang</param>
-		<!-- CHANGES.md has been declared by upstream to be the authoritative place -->
-		<param name="revision">6c7beeafa7a53c876c0dda13afd7f47e1ea6d905</param>
-		<param name="versionformat">10.15.3847</param>
-	</service>
-	<service name="recompress" mode="disabled">
-		<param name="file">*.tar</param>
-		<param name="compression">xz</param>
-	</service>
-	<service name="set_version" mode="disabled"/>
-</services>
diff --git a/glslang-10.15.3847.tar.xz b/glslang-10.15.3847.tar.xz
deleted file mode 100644
index bfb32af..0000000
--- a/glslang-10.15.3847.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:09cc4be444cf6c64d42f3b644a8d35c9799376e1b01fc45f217885c128394ece
-size 1752956
diff --git a/glslang.changes b/glslang.changes
index cb7a833..c913447 100644
--- a/glslang.changes
+++ b/glslang.changes
@@ -1,3 +1,17 @@
+-------------------------------------------------------------------
+Mon Jan 18 16:51:58 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to release 11.1.0
+  * Add new SpirvToolsDisassemble API interface.
+  * SPV: Add NonUniform decorations for stores, for constructors
+    and for OpImages created during lowering.
+  * SPIRV: Add disassembly support for multiple literal strings.
+  * Add support for  GL_EXT_fragment_shading_rate,
+    GL_EXT_shader_image_int64.
+  * Updates for final Vulkan ray tracing extensions.
+  * Add ray query capability if acceleration structure or ray
+    query types declared.
+
 -------------------------------------------------------------------
 Tue Aug 18 15:06:11 UTC 2020 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/glslang.spec b/glslang.spec
index 2ba3d3d..3286550 100644
--- a/glslang.spec
+++ b/glslang.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package glslang
 #
-# Copyright (c) 2020 SUSE LLC
+# Copyright (c) 2021 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -16,12 +16,10 @@
 #
 
 
-# lname needs a bump for every change in commit (_service)
-%define version_unconverted 10.15.3847
-%define lname libglslang10
+%define lname libglslang11
 
 Name:           glslang
-Version:        10.15.3847
+Version:        11.1.0
 Release:        0
 Summary:        OpenGL and OpenGL ES shader front end and validator
 License:        BSD-3-Clause
@@ -29,7 +27,7 @@ Group:          Development/Libraries/C and C++
 URL:            https://www.khronos.org/opengles/sdk/tools/Reference-Compiler/
 #Git-URL:	https://github.com/KhronosGroup/glslang
 
-Source:         %name-%version.tar.xz
+Source:         https://github.com/KhronosGroup/glslang/archive/%version.tar.gz
 Patch1:         0001-build-set-SOVERSION-on-all-libraries.patch
 BuildRequires:  bison
 BuildRequires:  cmake >= 2.8
@@ -76,7 +74,7 @@ compressor's dictionary can find better cross module commonality.
 %global _lto_cflags %{?_lto_cflags} -ffat-lto-objects
 # Trim -Wl,--no-undefined for now (https://github.com/KhronosGroup/glslang/issues/1484)
 %cmake -DCMAKE_SHARED_LINKER_FLAGS="-Wl,--as-needed -Wl,-z,now"
-make %{?_smp_mflags}
+%make_build
 
 %install
 %global _lto_cflags %{_lto_cflags} -ffat-lto-objects
@@ -100,7 +98,7 @@ ln -s libglslang.so "$b/%_libdir/libOSDependent.so"
 %postun -n %lname -p /sbin/ldconfig
 
 %files -n %lname
-%_libdir/*.so.10*
+%_libdir/*.so.11*
 
 %files devel
 %_bindir/gls*