diff --git a/.gitmodules b/.gitmodules
index 78424fbd7..d0f1973a0 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "gnu-efi"]
 	path = gnu-efi
 	url = https://github.com/rhboot/gnu-efi.git
-	branch = shim-15.6
+	branch = shim-15.8
diff --git a/gnu-efi b/gnu-efi
index 39d4b348e..328951d3d 160000
--- a/gnu-efi
+++ b/gnu-efi
@@ -1 +1 @@
-Subproject commit 39d4b348e0aaee43a27602961b0281df99c06957
+Subproject commit 328951d3dcb5ff97f5a7c7a362b006626fada000