diff --git a/SPIRV-Headers-1.5.4.g42.tar.xz b/SPIRV-Headers-1.5.4.g42.tar.xz
deleted file mode 100644
index 7bde335..0000000
--- a/SPIRV-Headers-1.5.4.g42.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:53d4568869b0f97683ccc6894fd0e10a60e4cb0e960963e00879c70e456e8cad
-size 138600
diff --git a/SPIRV-Headers-1.5.4.g57.tar.xz b/SPIRV-Headers-1.5.4.g57.tar.xz
new file mode 100644
index 0000000..5cc1dff
--- /dev/null
+++ b/SPIRV-Headers-1.5.4.g57.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:09d290088418af2872fb9eca47f8626de16a172093a60de3205a4909dc650fb8
+size 140000
diff --git a/_service b/_service
index f69e080..c006a58 100644
--- a/_service
+++ b/_service
@@ -2,7 +2,7 @@
 	<service name="tar_scm" mode="disabled">
  		<param name="scm">git</param>
 		<param name="url">https://github.com/KhronosGroup/SPIRV-Headers</param>
-		<param name="revision">a3fdfe81465d57efc97cfd28ac6c8190fb31a6c8</param>
+		<param name="revision">dafead1765f6c1a5f9f8a76387dcb2abe4e54acd</param>
 		<param name="parent-tag">1.5.4</param>
 		<param name="versionformat">1.5.4.g@TAG_OFFSET@</param>
 	</service>
diff --git a/spirv-headers.changes b/spirv-headers.changes
index d80a0a1..dec641f 100644
--- a/spirv-headers.changes
+++ b/spirv-headers.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Wed May  5 09:34:57 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to snapshot 1.5.4.g57 (dafead1765)
+  * Support SPV_KHR_expect_assume, SPV_KHR_linkonce_odr
+  * Add generator ID for MSP shader compiler
+
 -------------------------------------------------------------------
 Mon Mar  1 06:46:29 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/spirv-headers.spec b/spirv-headers.spec
index 9d8172d..9a20d18 100644
--- a/spirv-headers.spec
+++ b/spirv-headers.spec
@@ -17,7 +17,7 @@
 
 
 Name:           spirv-headers
-Version:        1.5.4.g42
+Version:        1.5.4.g57
 Release:        0
 Summary:        Machine-readable files from the SPIR-V registry
 License:        MIT
@@ -40,7 +40,7 @@ registry. This includes:
   set, and for the GLSL.std.450 extended instruction set.
 * The XML registry file.
 
-%prep 
+%prep
 %autosetup -n SPIRV-Headers-%version
 
 %build