diff --git a/_service b/_service
index 26ca226..6292d03 100644
--- a/_service
+++ b/_service
@@ -2,10 +2,9 @@
 	<service name="tar_scm" mode="disabled">
  		<param name="scm">git</param>
 		<param name="url">https://github.com/KhronosGroup/glslang</param>
-		<!-- minor part also in glslang/Include/revision.h (and sometimes out of date too) -->
-		<param name="revision">9c3204a1fde09ba7b98b1779047bf8d3491244a5</param>
-		<param name="parent-tag">e157435c1</param>
-		<param name="versionformat">8.13.3727+git@TAG_OFFSET@</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>
diff --git a/glslang-10.15.3847.tar.xz b/glslang-10.15.3847.tar.xz
new file mode 100644
index 0000000..bfb32af
--- /dev/null
+++ b/glslang-10.15.3847.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:09cc4be444cf6c64d42f3b644a8d35c9799376e1b01fc45f217885c128394ece
+size 1752956
diff --git a/glslang-8.13.3727+git4.tar.xz b/glslang-8.13.3727+git4.tar.xz
deleted file mode 100644
index f87483d..0000000
--- a/glslang-8.13.3727+git4.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:55d3ddfe02e5bb4d7991867becda8f46a9d6933e229b7b77d4e30e11d7a48d2a
-size 1707868
diff --git a/glslang.changes b/glslang.changes
index 0de13ca..3124a51 100644
--- a/glslang.changes
+++ b/glslang.changes
@@ -1,3 +1,19 @@
+-------------------------------------------------------------------
+Thu Aug 13 07:32:15 UTC 2020 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to release 10.15.3847 (6c7beeafa)
+  * Add support for EXT_ray_flags_primitive_culling,
+    GL_ARB_shader_bit_encoding, GL_ARB_shader_image_size,
+    GL_ARB_shader_storage_buffer_object,
+    GL_ARB_shading_language_packing, GL_ARB_texture_query_lod,
+    GL_ARB_vertex_attrib_64bit,
+    GL_EXT_shader_implicit_conversions,
+    GL_EXT_shader_integer_mix, GL_EXT_blend_func_extended
+  * Add support for primitive culling layout qualifier
+  * GlslangToSpv: offer a -g0 command line argument similar to gcc
+  * libglslang is now built with -fvisibility and exports
+- Drop ver.diff (issue resolved upstream)
+
 -------------------------------------------------------------------
 Wed Apr  8 10:42:02 UTC 2020 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/glslang.spec b/glslang.spec
index e139f53..f31b91b 100644
--- a/glslang.spec
+++ b/glslang.spec
@@ -17,11 +17,11 @@
 
 
 # lname needs a bump for every change in commit (_service)
-%define version_unconverted 8.13.3727+git4
-%define lname libglslang-suse10
+%define version_unconverted 10.15.3847
+%define lname libglslang10
 
 Name:           glslang
-Version:        8.13.3727+git4
+Version:        10.15.3847
 Release:        0
 Summary:        OpenGL and OpenGL ES shader front end and validator
 License:        BSD-3-Clause
@@ -30,7 +30,6 @@ URL:            https://www.khronos.org/opengles/sdk/tools/Reference-Compiler/
 #Git-URL:	https://github.com/KhronosGroup/glslang
 
 Source:         %name-%version.tar.xz
-Patch1:         ver.diff
 BuildRequires:  bison
 BuildRequires:  cmake >= 2.8
 BuildRequires:  fdupes
@@ -100,7 +99,7 @@ ln -s libglslang.so "$b/%_libdir/libOSDependent.so"
 %postun -n %lname -p /sbin/ldconfig
 
 %files -n %lname
-%_libdir/*.so.suse10*
+%_libdir/*.so.10*
 
 %files devel
 %_bindir/gls*
diff --git a/ver.diff b/ver.diff
deleted file mode 100644
index 2c9348d..0000000
--- a/ver.diff
+++ /dev/null
@@ -1,76 +0,0 @@
-From: Jan Engelhardt <jengelh@inai.de>
-Date: 2018-08-25 15:28:25.894943233 +0200
-
-Unversioned libraries suck!
-
-I loosely remember someone or something suggested that something like semver is in place.
-Diffing 7.10.2984 to 7.11.3113 however shows `nm -CD` differences on libSPIRV.so.
-There is no ABI stability to expect here.
-
--T spv::Builder::createLoad(unsigned int, spv::MemoryAccessMask, spv::Scope)
-+T spv::Builder::createLoad(unsigned int, spv::MemoryAccessMask, spv::Scope, unsigned int)
-
-
----
- SPIRV/CMakeLists.txt      |    2 ++
- StandAlone/CMakeLists.txt |    1 +
- glslang/CMakeLists.txt    |    1 +
- hlsl/CMakeLists.txt       |    1 +
- 4 files changed, 5 insertions(+)
-
-Index: glslang-8.13.3727+git4/SPIRV/CMakeLists.txt
-===================================================================
---- glslang-8.13.3727+git4.orig/SPIRV/CMakeLists.txt
-+++ glslang-8.13.3727+git4/SPIRV/CMakeLists.txt
-@@ -35,6 +35,7 @@ set(SPVREMAP_HEADERS
-     doc.h)
- 
- add_library(SPIRV ${LIB_TYPE} ${SOURCES} ${HEADERS})
-+set_target_properties(SPIRV PROPERTIES SOVERSION suse10)
- set_property(TARGET SPIRV PROPERTY FOLDER glslang)
- set_property(TARGET SPIRV PROPERTY POSITION_INDEPENDENT_CODE ON)
- target_include_directories(SPIRV PUBLIC
-@@ -43,6 +44,7 @@ target_include_directories(SPIRV PUBLIC
- 
- if (ENABLE_SPVREMAPPER)
-     add_library(SPVRemapper ${LIB_TYPE} ${SPVREMAP_SOURCES} ${SPVREMAP_HEADERS})
-+    set_target_properties(SPVRemapper PROPERTIES SOVERSION suse10)
-     set_property(TARGET SPVRemapper PROPERTY FOLDER glslang)
-     set_property(TARGET SPVRemapper PROPERTY POSITION_INDEPENDENT_CODE ON)
- endif()
-Index: glslang-8.13.3727+git4/StandAlone/CMakeLists.txt
-===================================================================
---- glslang-8.13.3727+git4.orig/StandAlone/CMakeLists.txt
-+++ glslang-8.13.3727+git4/StandAlone/CMakeLists.txt
-@@ -1,6 +1,7 @@
- add_library(glslang-default-resource-limits
-             ${CMAKE_CURRENT_SOURCE_DIR}/ResourceLimits.cpp
-             ${CMAKE_CURRENT_SOURCE_DIR}/resource_limits_c.cpp)
-+set_target_properties(glslang-default-resource-limits PROPERTIES SOVERSION suse10)
- set_property(TARGET glslang-default-resource-limits PROPERTY FOLDER glslang)
- set_property(TARGET glslang-default-resource-limits PROPERTY POSITION_INDEPENDENT_CODE ON)
- 
-Index: glslang-8.13.3727+git4/glslang/CMakeLists.txt
-===================================================================
---- glslang-8.13.3727+git4.orig/glslang/CMakeLists.txt
-+++ glslang-8.13.3727+git4/glslang/CMakeLists.txt
-@@ -83,6 +83,7 @@ set(HEADERS
- glslang_pch(SOURCES MachineIndependent/pch.cpp)
- 
- add_library(glslang ${LIB_TYPE} ${BISON_GLSLParser_OUTPUT_SOURCE} ${SOURCES} ${HEADERS})
-+set_target_properties(glslang PROPERTIES SOVERSION suse10)
- set_property(TARGET glslang PROPERTY FOLDER glslang)
- set_property(TARGET glslang PROPERTY POSITION_INDEPENDENT_CODE ON)
- target_link_libraries(glslang OGLCompiler OSDependent)
-Index: glslang-8.13.3727+git4/hlsl/CMakeLists.txt
-===================================================================
---- glslang-8.13.3727+git4.orig/hlsl/CMakeLists.txt
-+++ glslang-8.13.3727+git4/hlsl/CMakeLists.txt
-@@ -20,6 +20,7 @@ set(HEADERS
- glslang_pch(SOURCES pch.cpp)
- 
- add_library(HLSL ${LIB_TYPE} ${SOURCES} ${HEADERS})
-+set_target_properties(HLSL PROPERTIES SOVERSION suse10)
- set_property(TARGET HLSL PROPERTY FOLDER hlsl)
- set_property(TARGET HLSL PROPERTY POSITION_INDEPENDENT_CODE ON)
-