diff --git a/my_project/tab_data_explorer/app_data_explorer.py b/my_project/tab_data_explorer/app_data_explorer.py
index d86955c..58e19c1 100644
--- a/my_project/tab_data_explorer/app_data_explorer.py
+++ b/my_project/tab_data_explorer/app_data_explorer.py
@@ -63,6 +63,7 @@ def section_one_inputs():
                     for i in explore_dropdown_names
                 ],
                 value="DBT",
+                clearable=False,
             ),
         ],
     )
@@ -235,6 +236,7 @@ def section_two_inputs():
                                         ],
                                         value="RH",
                                         style={"flex": "70%"},
+                                        clearable=False,
                                     ),
                                 ],
                             ),
@@ -342,6 +344,7 @@ def section_two_inputs():
                                         ],
                                         value="RH",
                                         style={"flex": "70%"},
+                                        clearable=False,
                                     ),
                                 ],
                             ),
@@ -435,6 +438,7 @@ def section_three_inputs():
                                 ],
                                 value="DBT",
                                 style={"flex": "70%"},
+                                clearable=False,
                             ),
                         ],
                     ),
@@ -450,6 +454,7 @@ def section_three_inputs():
                                 ],
                                 value="RH",
                                 style={"flex": "70%"},
+                                clearable=False,
                             ),
                         ],
                     ),
@@ -465,6 +470,7 @@ def section_three_inputs():
                                 ],
                                 value="glob_hor_rad",
                                 style={"flex": "70%"},
+                                clearable=False,
                             ),
                         ],
                     ),
@@ -566,6 +572,7 @@ def section_three_inputs():
                                 ],
                                 value="RH",
                                 style={"flex": "70%"},
+                                clearable=False,
                             ),
                         ],
                     ),
diff --git a/my_project/tab_outdoor_comfort/app_outdoor_comfort.py b/my_project/tab_outdoor_comfort/app_outdoor_comfort.py
index 35250ec..11048cd 100644
--- a/my_project/tab_outdoor_comfort/app_outdoor_comfort.py
+++ b/my_project/tab_outdoor_comfort/app_outdoor_comfort.py
@@ -55,6 +55,7 @@ def inputs_outdoor_comfort():
                                     for i in outdoor_dropdown_names
                                 ],
                                 value="utci_Sun_Wind",
+                                clearable=False,
                             ),
                             html.Div(id="image-selection", style={"flex": "10%"}),
                         ],
diff --git a/my_project/tab_psy_chart/app_psy_chart.py b/my_project/tab_psy_chart/app_psy_chart.py
index e984a7f..453df83 100644
--- a/my_project/tab_psy_chart/app_psy_chart.py
+++ b/my_project/tab_psy_chart/app_psy_chart.py
@@ -74,6 +74,7 @@ def inputs():
                                 style={"flex": "70%"},
                                 persistence_type="session",
                                 persistence=True,
+                                clearable=False,
                             ),
                         ],
                     ),
@@ -175,6 +176,7 @@ def inputs():
                                 ],
                                 value="RH",
                                 style={"flex": "70%"},
+                                clearable=False,
                             ),
                         ],
                     ),
diff --git a/my_project/tab_sun/app_sun.py b/my_project/tab_sun/app_sun.py
index 10868fe..916af0d 100644
--- a/my_project/tab_sun/app_sun.py
+++ b/my_project/tab_sun/app_sun.py
@@ -76,6 +76,7 @@ def sun_path():
                         ],
                         value="polar",
                         style={"width": "10rem"},
+                        clearable=False,
                     ),
                 ],
             ),
@@ -96,6 +97,7 @@ def sun_path():
                         ],
                         value="None",
                         style={"width": "20rem"},
+                        clearable=False,
                     ),
                 ],
             ),
@@ -140,6 +142,7 @@ def explore_daily_heatmap():
                         ],
                         value="glob_hor_rad",
                         style={"width": "20rem"},
+                        clearable=False,
                     ),
                 ],
             ),
diff --git a/my_project/tab_t_rh/app_t_rh.py b/my_project/tab_t_rh/app_t_rh.py
index fb43aa0..477941b 100644
--- a/my_project/tab_t_rh/app_t_rh.py
+++ b/my_project/tab_t_rh/app_t_rh.py
@@ -39,6 +39,7 @@ def layout_t_rh():
                             for var in var_to_plot
                         ],
                         value=dropdown_names[var_to_plot[0]],
+                        clearable=False,
                     ),
                 ],
             ),
diff --git a/my_project/tab_wind/app_wind.py b/my_project/tab_wind/app_wind.py
index 468396a..f81d47b 100644
--- a/my_project/tab_wind/app_wind.py
+++ b/my_project/tab_wind/app_wind.py
@@ -241,6 +241,7 @@ def custom_wind_rose():
                                         ],
                                         value=1,
                                         style={"width": "6rem"},
+                                        clearable=False,
                                     ),
                                 ],
                             ),
@@ -259,6 +260,7 @@ def custom_wind_rose():
                                         ],
                                         value=1,
                                         style={"width": "6rem"},
+                                        clearable=False,
                                     ),
                                 ],
                             ),
@@ -282,6 +284,7 @@ def custom_wind_rose():
                                         ],
                                         value=12,
                                         style={"width": "6rem"},
+                                        clearable=False,
                                     ),
                                 ],
                             ),
@@ -300,6 +303,7 @@ def custom_wind_rose():
                                         ],
                                         value=24,
                                         style={"width": "6rem"},
+                                        clearable=False,
                                     ),
                                 ],
                             ),