diff --git a/mkosi.images/system/mkosi.conf.d/10-arch/mkosi.conf b/mkosi.images/system/mkosi.conf.d/10-arch/mkosi.conf
index 308431f766..cc05300e80 100644
--- a/mkosi.images/system/mkosi.conf.d/10-arch/mkosi.conf
+++ b/mkosi.images/system/mkosi.conf.d/10-arch/mkosi.conf
@@ -42,6 +42,7 @@ Packages=
         sbsigntools
         shadow
         squashfs-tools
+        stress
         tpm2-tools
         tpm2-tss
         vim
diff --git a/mkosi.images/system/mkosi.conf.d/10-centos-fedora/mkosi.conf b/mkosi.images/system/mkosi.conf.d/10-centos-fedora/mkosi.conf
index f15d14218c..37211b0cab 100644
--- a/mkosi.images/system/mkosi.conf.d/10-centos-fedora/mkosi.conf
+++ b/mkosi.images/system/mkosi.conf.d/10-centos-fedora/mkosi.conf
@@ -55,6 +55,7 @@ Packages=
         rpmautospec
         sbsigntools
         squashfs-tools
+        stress
         tpm2-tools
         util-linux
         veritysetup
diff --git a/mkosi.images/system/mkosi.conf.d/10-debian-ubuntu/mkosi.conf b/mkosi.images/system/mkosi.conf.d/10-debian-ubuntu/mkosi.conf
index c66ca5d221..492872029d 100644
--- a/mkosi.images/system/mkosi.conf.d/10-debian-ubuntu/mkosi.conf
+++ b/mkosi.images/system/mkosi.conf.d/10-debian-ubuntu/mkosi.conf
@@ -64,6 +64,7 @@ Packages=
         quota
         sbsigntool
         squashfs-tools
+        stress
         tpm2-tools
         tzdata
         xxd