diff --git a/utils/Ubuntu/21.04/install-dependencies b/utils/Ubuntu/21.04/install-dependencies
index f325f59..fffe836 100755
--- a/utils/Ubuntu/21.04/install-dependencies
+++ b/utils/Ubuntu/21.04/install-dependencies
@@ -3,7 +3,8 @@
 echo "Updating software..."
 sudo apt upgrade -y
 echo "Installing some useful tools..."
-sudo apt install -y wget curl vim screen git crudini lshw msr-tools sysfsutils uml-utilities remmina samba spice-client-gtk genisoimage uuid acpica-tools docker
+sudo apt install -y wget curl vim screen git crudini lshw msr-tools sysfsutils uml-utilities remmina samba spice-client-gtk genisoimage uuid acpica-tools
+sudo snap install docker
 echo "Installing virtualization software..."
 sudo apt install qemu-kvm qemu-utils qemu-efi ovmf qemu -y
 
diff --git a/utils/Ubuntu/21.04/kernel-param-utils b/utils/Ubuntu/21.04/kernel-param-utils
index 3ac278c..e2e1492 100755
--- a/utils/Ubuntu/21.04/kernel-param-utils
+++ b/utils/Ubuntu/21.04/kernel-param-utils
@@ -20,7 +20,7 @@ function removeKernelParam() {
     fi
 }
 function applyKernelParamChanges() {
-    sudo sh -c 'grub2-mkconfig > /etc/grub2-efi.cfg'
+    sudo update-grub
 }
 
 function setGrubTimeout() {
diff --git a/utils/ovmf-vbios-patch-setup b/utils/ovmf-vbios-patch-setup
index 94dc9da..d8a4c61 100755
--- a/utils/ovmf-vbios-patch-setup
+++ b/utils/ovmf-vbios-patch-setup
@@ -12,7 +12,8 @@ DISTRO_UTILS_DIR="${UTILS_DIR}/${DISTRO}"
 mkdir -p "${PROJECT_DIR}/thirdparty"
 cd "${PROJECT_DIR}/thirdparty"
 
-sudo service docker start
+# docker daemon is already running on ubuntu snap
+#sudo service docker start
 git clone https://github.com/T-vK/ovmf-with-vbios-patch.git
 cd ovmf-with-vbios-patch
 sudo docker build -t ovmf-vbios-patch .
\ No newline at end of file