diff --git a/horusgui/__init__.py b/horusgui/__init__.py
index 91c67cc..df0ed33 100755
--- a/horusgui/__init__.py
+++ b/horusgui/__init__.py
@@ -1 +1 @@
-__version__ = "0.3.11"
+__version__ = "0.3.12"
diff --git a/horusgui/gui.py b/horusgui/gui.py
index 1b9518f..0226c0d 100644
--- a/horusgui/gui.py
+++ b/horusgui/gui.py
@@ -707,12 +707,10 @@ telemetry_logger = TelemetryLogger(
 
 # Handlers for various checkboxes and push-buttons
 
-def habitat_position_reupload():
+def habitat_position_reupload(upload=True):
     """ Trigger a re-upload of user position information """
     global widgets, sondehub_uploader
 
-
-    # Do the same for Sondehub.
     sondehub_uploader.user_callsign = widgets["userCallEntry"].text()
     sondehub_uploader.user_radio = "Horus-GUI v" + __version__ + " " + widgets["userRadioEntry"].text()
     sondehub_uploader.user_antenna = widgets["userAntennaEntry"].text()
@@ -724,11 +722,19 @@ def habitat_position_reupload():
     except:
         sondehub_uploader.user_position = None
 
-    sondehub_uploader.last_user_position_upload = 0
+    if upload:
+        sondehub_uploader.last_user_position_upload = 0
 
 widgets["habitatUploadPosition"].clicked.connect(habitat_position_reupload)
 
 
+# Update uploader info as soon as it's edited, to ensure we upload with the latest user callsign
+def update_uploader_details():
+    habitat_position_reupload(False)
+
+widgets["userCallEntry"].textEdited.connect(update_uploader_details)
+
+
 def habitat_inhibit():
     """ Update the Habitat inhibit flag """
     global widgets, sondehub_uploader
diff --git a/pyproject.toml b/pyproject.toml
index 1326163..03d5934 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "horusgui"
-version = "0.3.11"
+version = "0.3.12"
 description = ""
 authors = ["Mark Jessop <vk5qi@rfhead.net>"]
 
@@ -12,7 +12,7 @@ PyQt5 = "^5.13.0"
 pyqtgraph = "^0.11.0"
 pyaudio = "^0.2.11"
 "ruamel.yaml" = "^0.16.10"
-horusdemodlib = "^0.3.6"
+horusdemodlib = "^0.3.10"
 
 [tool.poetry.dev-dependencies]