diff -Nru ubuntu-meta-1.501/debian/changelog ubuntu-meta-1.502/debian/changelog
--- ubuntu-meta-1.501/debian/changelog	2023-04-01 20:18:52.000000000 +0100
+++ ubuntu-meta-1.502/debian/changelog	2023-04-28 09:09:28.000000000 +0100
@@ -1,3 +1,10 @@
+ubuntu-meta (1.502) mantic; urgency=medium
+
+  * Fix update script to include germinate in 'dependency' check and
+    refactor script LP: #2017786
+
+ -- Tim Andersson <tim.andersson@canonical.com>  Fri, 28 Apr 2023 09:09:28 +0100
+
 ubuntu-meta (1.501) lunar; urgency=medium
 
   * Refreshed dependencies
diff -Nru ubuntu-meta-1.501/update ubuntu-meta-1.502/update
--- ubuntu-meta-1.501/update	2022-01-31 10:38:34.000000000 +0000
+++ ubuntu-meta-1.502/update	2023-04-28 09:06:12.000000000 +0100
@@ -1,13 +1,29 @@
 #! /bin/sh
 
-if ! which dch >/dev/null; then
-	echo >&2 "please install devscripts"
-	exit 1
-fi
 
-if ! which debootstrap >/dev/null; then
-	echo >&2 "please install debootstrap"
-	exit 1
-fi
+check_package_installed_and_version()
+{
+  PACKAGE="${1}"
+  if ! dpkg -l "${PACKAGE}" >/dev/null; then
+    echo >&2 "please install ${PACKAGE}"
+    exit 1
+  fi  
+  if ls ./"${PACKAGE}"-version >/dev/null 2>&1; then
+    VERSION_SPECIFIED=$(cat "${PACKAGE}-version" | cut -d' ' -f2)
+    VERSION_INSTALLED=$("${PACKAGE}" --version | cut -d' ' -f2)
+    if ! dpkg --compare-versions "${VERSION_INSTALLED}" gt "${VERSION_SPECIFIED}" >/dev/null; then
+      echo >&2 "${PACKAGE} version too outdated:"
+      echo "Version installed: ${VERSION_INSTALLED}"
+      echo "Version specified: ${VERSION_SPECIFIED}"
+      echo >&2 "Please install the correct version of ${PACKAGE} to run the update script"
+      exit 1
+    fi  
+  fi  
+}
+
+
+check_package_installed_and_version debootstrap
+check_package_installed_and_version germinate
+check_package_installed_and_version devscripts
 
 exec germinate-update-metapackage --vcs