diff --git a/ARM.Cortex_DFP.pdsc b/ARM.Cortex_DFP.pdsc
index 2bfafd0..8b60cab 100644
--- a/ARM.Cortex_DFP.pdsc
+++ b/ARM.Cortex_DFP.pdsc
@@ -13,6 +13,12 @@
     </release>
   </releases>
 
+  <requirements>
+    <packages>
+      <package vendor="ARM" name="CMSIS" version="6.0.0-0"/>
+    </packages>
+  </requirements>
+
   <devices>
     <!-- ******************************  Cortex-M0  ****************************** -->
     <family Dfamily="ARM Cortex M0" Dvendor="ARM:82">
diff --git a/gen_pack.sh b/gen_pack.sh
index 3e7fb99..06896c6 100755
--- a/gen_pack.sh
+++ b/gen_pack.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
-# Version: 2.7
-# Date: 2023-05-22
+# Version: 3.0
+# Date: 2023-11-06
 # This bash script generates a CMSIS Software Pack:
 #
 
@@ -9,7 +9,7 @@ set -o pipefail
 # Set version of gen pack library
 # For available versions see https://github.com/Open-CMSIS-Pack/gen-pack/tags.
 # Use the tag name without the prefix "v", e.g., 0.7.0
-REQUIRED_GEN_PACK_LIB="0.8.7"
+REQUIRED_GEN_PACK_LIB="0.9.1"
 
 # Set default command line arguments
 DEFAULT_ARGS=(-c "v")
@@ -100,43 +100,14 @@ function postprocess() {
 
 ############ DO NOT EDIT BELOW ###########
 
-function install_lib() {
-  local URL="https://github.com/Open-CMSIS-Pack/gen-pack/archive/refs/tags/v$1.tar.gz"
-  local STATUS=$(curl -sLI "${URL}" | grep "^HTTP" | tail -n 1 | cut -d' ' -f2 || echo "$((600+$?))")
-  if [[ $STATUS -ge 400 ]]; then
-    echo "Wrong/unavailable gen-pack lib version '$1'!" >&2
-    echo "Check REQUIRED_GEN_PACK_LIB variable."  >&2
-    echo "For available versions see https://github.com/Open-CMSIS-Pack/gen-pack/tags." >&2
-    exit 1
-  fi
-  echo "Downloading gen-pack lib version '$1' to '$2' ..."
-  mkdir -p "$2"
-  curl -L "${URL}" -s | tar -xzf - --strip-components 1 -C "$2" || exit 1
-}
-
-function load_lib() {
-  if [[ -d ${GEN_PACK_LIB} ]]; then
-    . "${GEN_PACK_LIB}/gen-pack"
-    return 0
-  fi
-  local GLOBAL_LIB="/usr/local/share/gen-pack/${REQUIRED_GEN_PACK_LIB}"
-  local USER_LIB="${HOME}/.local/share/gen-pack/${REQUIRED_GEN_PACK_LIB}"
-  if [[ ! -d "${GLOBAL_LIB}" && ! -d "${USER_LIB}" ]]; then
-    echo "Required gen_pack lib not found!" >&2
-    install_lib "${REQUIRED_GEN_PACK_LIB}" "${USER_LIB}"
-  fi
-
-  if [[ -d "${GLOBAL_LIB}" ]]; then
-    . "${GLOBAL_LIB}/gen-pack"
-  elif [[ -d "${USER_LIB}" ]]; then
-    . "${USER_LIB}/gen-pack"
-  else
-    echo "Required gen-pack lib is not installed!" >&2
-    exit 1
-  fi
-}
+# Set GEN_PACK_LIB_PATH to use a specific gen-pack library root
+# ... instead of bootstrap based on REQUIRED_GEN_PACK_LIB
+if [[ -f "${GEN_PACK_LIB_PATH}/gen-pack" ]]; then
+  . "${GEN_PACK_LIB}/gen-pack"
+else
+  . <(curl -sL "https://raw.githubusercontent.com/Open-CMSIS-Pack/gen-pack/main/bootstrap")
+fi
 
-load_lib
 gen_pack "${DEFAULT_ARGS[@]}" "$@"
 
 exit 0