diff --git a/molecules/sabayon-arm-base-4G.spec b/molecules/sabayon-arm-base-4G.spec
index 84ef5a0..7b2532c 100644
--- a/molecules/sabayon-arm-base-4G.spec
+++ b/molecules/sabayon-arm-base-4G.spec
@@ -3,4 +3,4 @@
 # Specify the image file size in Megabytes. This is mandatory.
 # To avoid runtime failure, make sure the image is large enough to fit your
 # chroot data.
-image_mb: 4000
+image_mb: 3800
diff --git a/molecules/sabayon-arm-base-8G.spec b/molecules/sabayon-arm-base-8G.spec
index fa33725..c640b47 100644
--- a/molecules/sabayon-arm-base-8G.spec
+++ b/molecules/sabayon-arm-base-8G.spec
@@ -3,4 +3,4 @@
 # Specify the image file size in Megabytes. This is mandatory.
 # To avoid runtime failure, make sure the image is large enough to fit your
 # chroot data.
-image_mb: 8000
+image_mb: 7800