diff --git a/arch/sandbox/configs/sandbox_defconfig b/arch/sandbox/configs/sandbox_defconfig
index c20dd15..dbaff12 100644
--- a/arch/sandbox/configs/sandbox_defconfig
+++ b/arch/sandbox/configs/sandbox_defconfig
@@ -79,6 +79,7 @@
 CONFIG_FS_FAT_LFN=y
 CONFIG_FS_BPKFS=y
 CONFIG_FS_UIMAGEFS=y
+CONFIG_FS_SQUASHFS=y
 CONFIG_BZLIB=y
 CONFIG_LZ4_DECOMPRESS=y
 CONFIG_XZ_DECOMPRESS=y