diff --git a/src/package/package_conflict_input_parser.sh b/src/package/package_conflict_input_parser.sh
index 6c5d9e7..547db98 100644
--- a/src/package/package_conflict_input_parser.sh
+++ b/src/package/package_conflict_input_parser.sh
@@ -1,8 +1,8 @@
 package_conflict_input_parser() {
   local packages="$1"
   local conflict_type="$2"
-  local input="$TMP_DIR/package_conflict_input"
-  local input_choices="$TMP_DIR/package_conflict_input_choices"
+  local input="$TMP_ROOT/package_conflict_input"
+  local input_choices="$TMP_ROOT/package_conflict_input_choices"
   local choices=
   local packages_to_install=
   local packages_to_uninstall=
diff --git a/src/package/package_conflict_resolution.sh b/src/package/package_conflict_resolution.sh
index f2ba8dd..e7b4efc 100644
--- a/src/package/package_conflict_resolution.sh
+++ b/src/package/package_conflict_resolution.sh
@@ -3,18 +3,18 @@ resolve_packages() {
   local input_packages=
 
   # shellcheck disable=SC2154
-  ( echo "$system_packages" > "$TMP_DIR/system_packages"
-    echo "$user_packages" > "$TMP_DIR/user_packages" )
+  ( echo "$system_packages" > "$TMP_ROOT/system_packages"
+    echo "$user_packages" > "$TMP_ROOT/user_packages" )
 
   local packages_not_on_configuration="$(grep -v -x -f \
-    "$TMP_DIR/user_packages" "$TMP_DIR/system_packages" | xargs)"
+    "$TMP_ROOT/user_packages" "$TMP_ROOT/system_packages" | xargs)"
 
   if [ -n "$packages_not_on_configuration" ]; then
     not_on_configuration_dialog "$packages_not_on_configuration"
   fi
 
   local packages_not_installed=$(grep -v -x -f \
-    "$TMP_DIR/system_packages" "$TMP_DIR/user_packages" | xargs)
+    "$TMP_ROOT/system_packages" "$TMP_ROOT/user_packages" | xargs)
 
   if [ -n "$packages_not_installed" ]; then
     not_installed_dialog "$packages_not_installed"
diff --git a/src/utility.sh b/src/utility.sh
index b342897..82a8e91 100644
--- a/src/utility.sh
+++ b/src/utility.sh
@@ -124,12 +124,16 @@ set_opts() {
 }
 
 prepare_directories() {
-  if ! [ -d "$TMP_DIR" ]; then
-    mkdir "$TMP_DIR"
+  if ! [ -d "$TMP_ROOT" ]; then
+    mkdir "$TMP_ROOT"
   fi
 
-  if ! [ -d "$CACHE_DIR" ]; then
-    mkdir -p "$CACHE_DIR"
+  if ! [ -d "$CACHE_ROOT" ]; then
+    mkdir -p "$CACHE_ROOT"
+  fi
+
+  if ! [ -d "$BACKUP_ROOT" ]; then
+    mkdir -p "$BACKUP_ROOT"
   fi
 
   if ! [ -d "$CONFIG_ROOT" ]; then
diff --git a/tori b/tori
index 6009659..e2e92e7 100755
--- a/tori
+++ b/tori
@@ -5,8 +5,9 @@ main() {
   VERSION="0.5.0 2024-07-18"
   TORI_ROOT="$HOME/.local/share/tori"
   CONFIG_ROOT="$HOME/.config/tori"
-  TMP_DIR="/tmp/tori"
-  CACHE_DIR="$HOME/.cache/tori"
+  BACKUP_ROOT="$HOME/.local/state/tori/backup"
+  TMP_ROOT="/tmp/tori"
+  CACHE_ROOT="$HOME/.cache/tori"
 
   # os-independent state
 
@@ -25,7 +26,7 @@ main() {
 
   ## os-dependent state
   OS="$(get_operating_system)"
-  PACKAGE_CACHE="$CACHE_DIR/${OS}_packages.cache"
+  PACKAGE_CACHE="$CACHE_ROOT/${OS}_packages.cache"
 
   base_files=
   bkp_files=