diff --git a/tools/mkimage-iso-efi-initrd/Dockerfile b/tools/mkimage-iso-efi-initrd/Dockerfile
index 1278bce67..098e14efc 100644
--- a/tools/mkimage-iso-efi-initrd/Dockerfile
+++ b/tools/mkimage-iso-efi-initrd/Dockerfile
@@ -1,4 +1,4 @@
-FROM linuxkit/grub:fc70600340f94efc804abaebcf534ac810dd14ed AS grub
+FROM linuxkit/grub:4582464453cd3136c7e64d6ec747c4869d771af0 AS grub
 
 FROM linuxkit/alpine:7f3944798557de5518a56e3437d7ed982701f224 AS mirror
 RUN mkdir -p /out/etc/apk && cp -r /etc/apk/* /out/etc/apk/
diff --git a/tools/mkimage-iso-efi/Dockerfile b/tools/mkimage-iso-efi/Dockerfile
index 2754ab83a..500ab1ecb 100644
--- a/tools/mkimage-iso-efi/Dockerfile
+++ b/tools/mkimage-iso-efi/Dockerfile
@@ -1,4 +1,4 @@
-FROM linuxkit/grub:fc70600340f94efc804abaebcf534ac810dd14ed AS grub
+FROM linuxkit/grub:4582464453cd3136c7e64d6ec747c4869d771af0 AS grub
 
 FROM linuxkit/alpine:7f3944798557de5518a56e3437d7ed982701f224 AS mirror
 RUN mkdir -p /out/etc/apk && cp -r /etc/apk/* /out/etc/apk/
diff --git a/tools/mkimage-qcow2-efi/Dockerfile b/tools/mkimage-qcow2-efi/Dockerfile
index 858dec964..06482bd6c 100644
--- a/tools/mkimage-qcow2-efi/Dockerfile
+++ b/tools/mkimage-qcow2-efi/Dockerfile
@@ -1,4 +1,4 @@
-FROM linuxkit/grub:fc70600340f94efc804abaebcf534ac810dd14ed AS grub
+FROM linuxkit/grub:4582464453cd3136c7e64d6ec747c4869d771af0 AS grub
 
 FROM linuxkit/alpine:7f3944798557de5518a56e3437d7ed982701f224 AS mirror
 RUN mkdir -p /out/etc/apk && cp -r /etc/apk/* /out/etc/apk/
diff --git a/tools/mkimage-raw-efi/Dockerfile b/tools/mkimage-raw-efi/Dockerfile
index 83eb77afe..b91871e6d 100644
--- a/tools/mkimage-raw-efi/Dockerfile
+++ b/tools/mkimage-raw-efi/Dockerfile
@@ -1,4 +1,4 @@
-FROM linuxkit/grub:fc70600340f94efc804abaebcf534ac810dd14ed AS grub
+FROM linuxkit/grub:4582464453cd3136c7e64d6ec747c4869d771af0 AS grub
 
 FROM linuxkit/alpine:7f3944798557de5518a56e3437d7ed982701f224 AS mirror
 RUN mkdir -p /out/etc/apk && cp -r /etc/apk/* /out/etc/apk/