diff --git a/09913f088a1197aba4aefd300a876b2ebbaa3391.tar.gz b/09913f088a1197aba4aefd300a876b2ebbaa3391.tar.gz
new file mode 100644
index 0000000..430b245
--- /dev/null
+++ b/09913f088a1197aba4aefd300a876b2ebbaa3391.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6d4aad5a86d7d5af144747aee1d616f624897d64d842f282aca7777f84244318
+size 543533
diff --git a/cb6b2c32dbfc3257c1e9142a116fe9ee3d9b80a2.tar.gz b/cb6b2c32dbfc3257c1e9142a116fe9ee3d9b80a2.tar.gz
deleted file mode 100644
index 5824ceb..0000000
--- a/cb6b2c32dbfc3257c1e9142a116fe9ee3d9b80a2.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:2bfe8f3006d5b5e350cdc32bcee54f894d65d8a2932574f399e7cd0b3d787044
-size 531921
diff --git a/spirv-headers.changes b/spirv-headers.changes
index 3fe8e0c..437a649 100644
--- a/spirv-headers.changes
+++ b/spirv-headers.changes
@@ -1,3 +1,16 @@
+-------------------------------------------------------------------
+Wed Mar 12 16:46:56 UTC 2025 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to snapshot 1.6.4+sdk309 (Git 09913f088)
+  * Add provisional key to grammar
+  * Grammar and header changes for SPV_INTEL_2d_block_io &
+    SPV_INTEL_subgroup_matrix_multiply_accumulate
+  * Add SPV_NV_cooperative_vector
+  * Updates IntegerFunctions2INTEL to remove Shader capability
+    dependency
+  * Add headers for SPV_NV_cluster_acceleration_structure &
+    SPV_NV_linear_swept_spheres
+
 -------------------------------------------------------------------
 Thu Mar  6 14:02:10 UTC 2025 - Stefan Dirsch <sndirsch@suse.com>
 
diff --git a/spirv-headers.spec b/spirv-headers.spec
index a1795d8..aeaede5 100644
--- a/spirv-headers.spec
+++ b/spirv-headers.spec
@@ -30,15 +30,15 @@
 %endif
 
 Name:           spirv-headers
-Version:        1.6.4+sdk303
-%define innerver 1.3.303
-%define rev cb6b2c32dbfc3257c1e9142a116fe9ee3d9b80a2
+Version:        1.6.4+sdk304
+%define innerver 1.4.304
+%define rev 09913f088a1197aba4aefd300a876b2ebbaa3391
 Release:        0
 Summary:        Machine-readable files from the SPIR-V registry
 License:        MIT
 Group:          Development/Libraries/C and C++
 URL:            https://github.com/KhronosGroup/SPIRV-Headers
-Source:         https://github.com/KhronosGroup/SPIRV-Headers/archive/cb6b2c32dbfc3257c1e9142a116fe9ee3d9b80a2.tar.gz
+Source:         https://github.com/KhronosGroup/SPIRV-Headers/archive/%rev.tar.gz
 BuildArch:      noarch
 BuildRequires:  cmake >= 2.8
 BuildRequires:  fdupes