diff --git a/image-yaml/overcloud-hardened-images-uefi.yaml b/image-yaml/overcloud-hardened-images-uefi.yaml
index 026741b7a..595d63199 100644
--- a/image-yaml/overcloud-hardened-images-uefi.yaml
+++ b/image-yaml/overcloud-hardened-images-uefi.yaml
@@ -42,6 +42,6 @@ disk_images:
       DIB_PYTHON_VERSION: '2'
       DIB_MODPROBE_BLACKLIST: 'usb-storage cramfs freevxfs jffs2 hfs hfsplus squashfs udf bluetooth'
       DIB_BOOTLOADER_DEFAULT_CMDLINE: 'nofb nomodeset vga=normal console=tty0 console=ttyS0,115200 audit=1 nousb'
-      DIB_IMAGE_SIZE: '23'
+      DIB_IMAGE_SIZE: '40'
       COMPRESS_IMAGE: '1'
       DIB_BLOCK_DEVICE: 'efi'
diff --git a/image-yaml/overcloud-hardened-images.yaml b/image-yaml/overcloud-hardened-images.yaml
index a2243f8f6..750a140a4 100644
--- a/image-yaml/overcloud-hardened-images.yaml
+++ b/image-yaml/overcloud-hardened-images.yaml
@@ -42,5 +42,5 @@ disk_images:
       DIB_PYTHON_VERSION: '2'
       DIB_MODPROBE_BLACKLIST: 'usb-storage cramfs freevxfs jffs2 hfs hfsplus squashfs udf vfat bluetooth'
       DIB_BOOTLOADER_DEFAULT_CMDLINE: 'nofb nomodeset vga=normal console=tty0 console=ttyS0,115200 audit=1 nousb'
-      DIB_IMAGE_SIZE: '23'
+      DIB_IMAGE_SIZE: '40'
       COMPRESS_IMAGE: '1'
diff --git a/releasenotes/notes/increase-size-security-hardened-images-3fc4df73a48d4a91.yaml b/releasenotes/notes/increase-size-security-hardened-images-3fc4df73a48d4a91.yaml
new file mode 100644
index 000000000..9c9f14a99
--- /dev/null
+++ b/releasenotes/notes/increase-size-security-hardened-images-3fc4df73a48d4a91.yaml
@@ -0,0 +1,7 @@
+---
+features:
+  - |
+    Increase the size of the security hardened images to 40G. With the move
+    to containers more disk space is needed and the disk layout has been
+    modified. It needs a global size of 40G to work.
+