diff --git a/comictaggerlib/main.py b/comictaggerlib/main.py
index 47e13a2..6657685 100755
--- a/comictaggerlib/main.py
+++ b/comictaggerlib/main.py
@@ -145,7 +145,17 @@ def ctmain() -> None:
         format="%(asctime)s | %(name)s | %(levelname)s | %(message)s",
         datefmt="%Y-%m-%dT%H:%M:%S",
     )
-    # Need to load setting before anything else
+
+    if settings.settings_warning < 4:
+        print(  # noqa: T201
+            """
+!!!Warning!!!
+The next release will save settings in a different format
+NO SETTINGS WILL BE TRANSFERED to the new version.
+See https://github.com/comictagger/comictagger/releases/1.5.5 for more information.
+""",
+            file=sys.stderr,
+        )
 
     # manage the CV API key
     # None comparison is used so that the empty string can unset the value
diff --git a/comictaggerlib/settings.py b/comictaggerlib/settings.py
index 17b7c5d..ac17af0 100644
--- a/comictaggerlib/settings.py
+++ b/comictaggerlib/settings.py
@@ -70,6 +70,7 @@ class ComicTaggerSettings:
         # Show/ask dialog flags
         self.ask_about_cbi_in_rar = True
         self.show_disclaimer = True
+        self.settings_warning = 0
         self.dont_notify_about_this_version = ""
         self.ask_about_usage_stats = True
 
@@ -223,6 +224,8 @@ class ComicTaggerSettings:
             self.ask_about_cbi_in_rar = self.config.getboolean("dialogflags", "ask_about_cbi_in_rar")
         if self.config.has_option("dialogflags", "show_disclaimer"):
             self.show_disclaimer = self.config.getboolean("dialogflags", "show_disclaimer")
+        if self.config.has_option("dialogflags", "settings_warning"):
+            self.settings_warning = self.config.getint("dialogflags", "settings_warning")
         if self.config.has_option("dialogflags", "dont_notify_about_this_version"):
             self.dont_notify_about_this_version = self.config.get("dialogflags", "dont_notify_about_this_version")
         if self.config.has_option("dialogflags", "ask_about_usage_stats"):
@@ -349,6 +352,7 @@ class ComicTaggerSettings:
 
         self.config.set("dialogflags", "ask_about_cbi_in_rar", self.ask_about_cbi_in_rar)
         self.config.set("dialogflags", "show_disclaimer", self.show_disclaimer)
+        self.config.set("dialogflags", "settings_warning", self.settings_warning)
         self.config.set("dialogflags", "dont_notify_about_this_version", self.dont_notify_about_this_version)
         self.config.set("dialogflags", "ask_about_usage_stats", self.ask_about_usage_stats)
 
diff --git a/comictaggerlib/taggerwindow.py b/comictaggerlib/taggerwindow.py
index 9aaf9c5..74c2212 100644
--- a/comictaggerlib/taggerwindow.py
+++ b/comictaggerlib/taggerwindow.py
@@ -261,6 +261,23 @@ Have fun!
             )
             self.settings.show_disclaimer = not checked
 
+        if self.settings.settings_warning < 4:
+            checked = OptionalMessageDialog.msg(
+                self,
+                "Warning!",
+                f"""<span style="font-size:15px">
+{"&nbsp;"*100}
+The next release will save settings in a different format
+<span style="font-weight: bold;font-size:19px">no settings will be transfered</span> to the new version.<br/>
+See <a href="https://github.com/comictagger/comictagger/releases/1.5.5">https://github.com/comictagger/comictagger/releases/1.5.5</a>
+for more information
+<br/><br/>
+You have {4-self.settings.settings_warning} warnings left.
+</span>""",
+            )
+            if checked:
+                self.settings.settings_warning += 1
+
         if self.settings.check_for_new_version:
             self.check_latest_version_online()