diff --git a/src/commands/backup.zsh b/src/commands/backup.zsh
index f15dba1..bd7f745 100644
--- a/src/commands/backup.zsh
+++ b/src/commands/backup.zsh
@@ -39,13 +39,8 @@ function __tsm::commands::backup::session() {
     return 1
   fi
 
-  local session_dump
-  session_dump="$(__tsm::helpers::dump)" || return $status
-
-  local filename="$(__tsm::utils::filename).$(__tsm::utils::random).txt"
-  [[ -n "$session_file" ]] && filename="${session_file:A:t:r}.${filename}"
-
-  builtin print -- "$session_dump" > "${TSM_BACKUPS_DIR}/$filename" \
+  local filename="${session_file:A:t:r}.$(__tsm::utils::datetime::ctime "$session_file").$(__tsm::utils::random).txt"
+  command cp -f "$session_file" "${TSM_BACKUPS_DIR}/$filename" >/dev/null \
     && __tsm::commands::backup::clean
 }
 
diff --git a/src/setup.zsh b/src/setup.zsh
index 7d0d9dc..5c13056 100644
--- a/src/setup.zsh
+++ b/src/setup.zsh
@@ -5,6 +5,7 @@ emulate -LR zsh
 
 zmodload zsh/parameter
 zmodload zsh/datetime
+zmodload -F zsh/stat b:zstat
 
 setopt extended_glob
 setopt typeset_silent
diff --git a/src/utils/datetime.zsh b/src/utils/datetime.zsh
index bf27bc2..06ba149 100644
--- a/src/utils/datetime.zsh
+++ b/src/utils/datetime.zsh
@@ -5,3 +5,8 @@ function __tsm::utils::datetime() {
   # then it's definitely not mine. Don't be a PITA.
   builtin printf "%s.%03d" "$(builtin strftime "%Y-%m-%dT%H:%M:%S" $epochtime[1])" "$(($epochtime[2] / 1000000))"
 }
+
+# Return the creation time of a file
+function __tsm::utils::datetime::ctime() {
+  builtin zstat -F "%Y-%m-%dT%H:%M:%S" +ctime "$1"
+}