diff --git a/SPECS/mariner-release/mariner-release.spec b/SPECS/mariner-release/mariner-release.spec
index 3bf8b44101c..4ab28eeb09e 100644
--- a/SPECS/mariner-release/mariner-release.spec
+++ b/SPECS/mariner-release/mariner-release.spec
@@ -1,7 +1,7 @@
 Summary:       CBL-Mariner release files
 Name:          mariner-release
 Version:       1.0
-Release:       17%{?dist}
+Release:       18%{?dist}
 License:       MIT
 Group:         System Environment/Base
 URL:           https://aka.ms/cbl-mariner
@@ -67,6 +67,8 @@ rm -rf $RPM_BUILD_ROOT
 %config(noreplace) /etc/issue.net
 
 %changelog
+*   Thu Jun 15 2021 Jon Slobodzian <joslobo@microsoft.com> - 1.0-18
+-   Updating version for Mid-May update to fix ISO boot issue.
 *   Thu Jun 3 2021 Jon Slobodzian <joslobo@microsoft.com> - 1.0-17
 -   Updating version for May update
 *   Wed Apr 27 2021 Jon Slobodzian <joslobo@microsoft.com> - 1.0-16
diff --git a/toolkit/resources/manifests/package/pkggen_core_aarch64.txt b/toolkit/resources/manifests/package/pkggen_core_aarch64.txt
index bf9043aecbb..fe5ac38bdf8 100644
--- a/toolkit/resources/manifests/package/pkggen_core_aarch64.txt
+++ b/toolkit/resources/manifests/package/pkggen_core_aarch64.txt
@@ -58,7 +58,7 @@ findutils-lang-4.6.0-7.cm1.aarch64.rpm
 gettext-0.19.8.1-4.cm1.aarch64.rpm
 gzip-1.9-5.cm1.aarch64.rpm
 make-4.2.1-5.cm1.aarch64.rpm
-mariner-release-1.0-17.cm1.noarch.rpm
+mariner-release-1.0-18.cm1.noarch.rpm
 patch-2.7.6-7.cm1.aarch64.rpm
 util-linux-2.32.1-3.cm1.aarch64.rpm
 util-linux-devel-2.32.1-3.cm1.aarch64.rpm
diff --git a/toolkit/resources/manifests/package/pkggen_core_x86_64.txt b/toolkit/resources/manifests/package/pkggen_core_x86_64.txt
index 53366f0d74b..93a42bec0b2 100644
--- a/toolkit/resources/manifests/package/pkggen_core_x86_64.txt
+++ b/toolkit/resources/manifests/package/pkggen_core_x86_64.txt
@@ -58,7 +58,7 @@ findutils-lang-4.6.0-7.cm1.x86_64.rpm
 gettext-0.19.8.1-4.cm1.x86_64.rpm
 gzip-1.9-5.cm1.x86_64.rpm
 make-4.2.1-5.cm1.x86_64.rpm
-mariner-release-1.0-17.cm1.noarch.rpm
+mariner-release-1.0-18.cm1.noarch.rpm
 patch-2.7.6-7.cm1.x86_64.rpm
 util-linux-2.32.1-3.cm1.x86_64.rpm
 util-linux-devel-2.32.1-3.cm1.x86_64.rpm
diff --git a/toolkit/resources/manifests/package/toolchain_aarch64.txt b/toolkit/resources/manifests/package/toolchain_aarch64.txt
index cefeb58ef88..4216abb3b9c 100644
--- a/toolkit/resources/manifests/package/toolchain_aarch64.txt
+++ b/toolkit/resources/manifests/package/toolchain_aarch64.txt
@@ -240,7 +240,7 @@ m4-debuginfo-1.4.18-4.cm1.aarch64.rpm
 make-4.2.1-5.cm1.aarch64.rpm
 make-debuginfo-4.2.1-5.cm1.aarch64.rpm
 mariner-check-macros-1.0-3.cm1.noarch.rpm
-mariner-release-1.0-17.cm1.noarch.rpm
+mariner-release-1.0-18.cm1.noarch.rpm
 mariner-repos-1.0-13.cm1.noarch.rpm
 mariner-repos-extras-1.0-13.cm1.noarch.rpm
 mariner-repos-extras-preview-1.0-13.cm1.noarch.rpm
diff --git a/toolkit/resources/manifests/package/toolchain_x86_64.txt b/toolkit/resources/manifests/package/toolchain_x86_64.txt
index 5056e41310c..4c70c14118e 100644
--- a/toolkit/resources/manifests/package/toolchain_x86_64.txt
+++ b/toolkit/resources/manifests/package/toolchain_x86_64.txt
@@ -240,7 +240,7 @@ m4-debuginfo-1.4.18-4.cm1.x86_64.rpm
 make-4.2.1-5.cm1.x86_64.rpm
 make-debuginfo-4.2.1-5.cm1.x86_64.rpm
 mariner-check-macros-1.0-3.cm1.noarch.rpm
-mariner-release-1.0-17.cm1.noarch.rpm
+mariner-release-1.0-18.cm1.noarch.rpm
 mariner-repos-1.0-13.cm1.noarch.rpm
 mariner-repos-extras-1.0-13.cm1.noarch.rpm
 mariner-repos-extras-preview-1.0-13.cm1.noarch.rpm