diff --git a/_service b/_service
index 8cd438a..4b58fa1 100644
--- a/_service
+++ b/_service
@@ -2,8 +2,9 @@
 	<service name="tar_scm" mode="disabled">
  		<param name="scm">git</param>
 		<param name="url">git://github.com/KhronosGroup/glslang</param>
-		<param name="parent-tag">3.0</param>
-		<param name="versionformat">@PARENT_TAG@.g@TAG_OFFSET@</param>
+<!-- minor part in glslang/Include/revision.h -->
+		<param name="revision">a51525059f3f264c2337ae72997ca4e7ad7e17d0</param>
+		<param name="versionformat">6.2.2604</param>
 	</service>
 	<service name="recompress" mode="disabled">
 		<param name="file">*.tar</param>
diff --git a/glslang-3.0.g1817.tar.xz b/glslang-3.0.g1817.tar.xz
deleted file mode 100644
index 4286829..0000000
--- a/glslang-3.0.g1817.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:8f532032378be2731ff114f55ca88dddebbd2127613014f6e261be5e9f0cdf46
-size 1192028
diff --git a/glslang-6.2.2604.tar.xz b/glslang-6.2.2604.tar.xz
new file mode 100644
index 0000000..2bba646
--- /dev/null
+++ b/glslang-6.2.2604.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:eb73b76b77bfa2442348418bfcac480f5eb807e70d706ac0a32ca504599e5019
+size 1317756
diff --git a/glslang.changes b/glslang.changes
index cbb6c17..5cc1240 100644
--- a/glslang.changes
+++ b/glslang.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Mar  8 00:39:46 UTC 2018 - jengelh@inai.de
+
+- Update to 6.2.2604
+  * SPV: Implement Vulkan 1.1 features and extensions.
+
 -------------------------------------------------------------------
 Wed Feb  7 22:51:46 UTC 2018 - jengelh@inai.de
 
diff --git a/glslang.spec b/glslang.spec
index eb2e4be..2a0ca5b 100644
--- a/glslang.spec
+++ b/glslang.spec
@@ -16,10 +16,10 @@
 #
 
 
-%define version_unconverted 3.0.g1817
+%define version_unconverted 6.2.2604
 
 Name:           glslang
-Version:        3.0.g1817
+Version:        6.2.2604
 Release:        0
 Summary:        OpenGL and OpenGL ES shader front end and validator
 License:        BSD-3-Clause