diff --git a/CHANGELOG.md b/CHANGELOG.md
index ff5cceb..2d3ad13 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## [4.0.3] 2023-11-22
+## Fixed
+- Query helper: backwards compatibility for pre-2021 versions of Python 3
+
 ## [4.0.2] 2023-11-22
 ## Fixed
 - Query helper not loading: fixed a remote link pointing to the wrong destination and added a checksum verification to ensure file is present
diff --git a/dzgui.sh b/dzgui.sh
index a4e4715..49eb29a 100755
--- a/dzgui.sh
+++ b/dzgui.sh
@@ -2002,7 +2002,9 @@ fetch_dzq(){
 	curl -Ls "$url" > $helpers_path/a2s/$repo.py
 }
 fetch_query(){
-    [[ $(md5sum $helpers_path/query.py | awk '{print $1}') == "7cbae12ae68b526e7ff376b638123cc7" ]] && return
+    local sum="d52ff070b5bb36ace2fce2d914479f47"
+    local file="$helpers_path/query.py"
+    [[ -f $file ]] && [[ $(md5sum $file | awk '{print $1}') == $sum ]] && return
 	local author="aclist"
 	local repo="dzgui"
 	local url="https://raw.githubusercontent.com/$author/dztui/$repo/helpers/query.py"
diff --git a/helpers/query.py b/helpers/query.py
index 8a02a17..71ecc5e 100644
--- a/helpers/query.py
+++ b/helpers/query.py
@@ -40,11 +40,16 @@ def get_rules(ip, qport):
     except:
         sys.exit(1)
 
+def switch(case):
+    if case == "info":
+        get_info(ip, qport)
+    elif case == "rules":
+        get_rules(ip, qport)
+    else:
+        sys.exit(1)
+
 ip = sys.argv[1]
 qport = sys.argv[2]
 mode = sys.argv[3]
-match mode:
-    case "info":
-        get_info(ip, qport)
-    case "rules":
-        get_rules(ip, qport)
+
+switch(mode)