diff --git a/CHANGELOG.md b/CHANGELOG.md
index c90a51e..cceaf3e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+### Chores
++ dependencies updated, [cf7e02dde94f69832a2e485b99785afc66a5bc15]
+
+### Features
++ Enable sorting of containers by every heading, via keyboard or mouse, closes [#3], [a6c296f2cde56cf241bcd696cab8bd477270e5f4]
++ Spawn & track docker information update requests, multiple identical requests cannot be executed, [740c059b276f35acd1cb03f1030134646bf8a07d]
+
 # <a href='https://github.com/mrjackwills/oxker/releases/tag/v0.0.6'>v0.0.6</a>
 ### 2022-07-06
 
diff --git a/README.md b/README.md
index ccbe399..09b1fd8 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@
 </p>
 
 
-## Download & install 
+## Download & install
 
 See <a href="https://github.com/mrjackwills/oxker/releases" target='_blank' rel='noopener noreferrer'>releases</a>
 
@@ -54,7 +54,7 @@ In application controls
 available command line arguments
 | argument|result|
 |--|--|
-|```-d [number > 0]```| set the update interval for docker information, in ms, defaults to 1000 (1 second) |
+|```-d [number > 0]```| set the minimum update interval for docker information, in ms, defaults to 1000 (1 second) |
 |```-r```| Show raw logs, by default oxker will remove ANSI formatting (conflicts with -c) |
 |```-c```| Attempt to color the logs (conflicts with -r) |
 |```-t```| Remove timestamps from each log entry |
diff --git a/src/app_data/container_state.rs b/src/app_data/container_state.rs
index 4195e7f..4dbb32b 100644
--- a/src/app_data/container_state.rs
+++ b/src/app_data/container_state.rs
@@ -10,7 +10,6 @@ use super::Header;
 #[derive(Debug, Clone)]
 pub struct StatefulList<T> {
     pub state: ListState,
-    // todo BTreeMap
     pub items: Vec<T>,
 }
 
diff --git a/src/ui/draw_blocks.rs b/src/ui/draw_blocks.rs
index f9f5c75..565881e 100644
--- a/src/ui/draw_blocks.rs
+++ b/src/ui/draw_blocks.rs
@@ -20,7 +20,7 @@ use crate::{
     app_error::AppError,
 };
 
-use super::gui_state::BoxLocation;
+use super::gui_state::{BoxLocation, Region};
 use super::{GuiState, SelectablePanel};
 
 const NAME_TEXT: &str = r#"
@@ -48,7 +48,7 @@ fn generate_block<'a>(
     gui_state: &Arc<Mutex<GuiState>>,
     panel: SelectablePanel,
 ) -> Block<'a> {
-    gui_state.lock().insert_into_panel_map(panel, area);
+    gui_state.lock().update_map(Region::Panel(panel), area);
     let mut block = Block::default()
         .borders(Borders::ALL)
         .border_type(BorderType::Rounded);
@@ -473,10 +473,11 @@ pub fn draw_heading_bar<B: Backend>(
 
         // draw the actual header blocks
         for (index, (paragraph, header, _)) in header_data.into_iter().enumerate() {
+			let rect = headers_section[index];
             gui_state
                 .lock()
-                .insert_into_header_map(header, headers_section[index]);
-            f.render_widget(paragraph, headers_section[index]);
+				.update_map(Region::Header(header), rect);
+            f.render_widget(paragraph, rect);
         }
     }
 
diff --git a/src/ui/gui_state.rs b/src/ui/gui_state.rs
index ab40371..d95515e 100644
--- a/src/ui/gui_state.rs
+++ b/src/ui/gui_state.rs
@@ -10,6 +10,12 @@ pub enum SelectablePanel {
     Logs,
 }
 
+
+pub enum Region {
+	Panel(SelectablePanel),
+	Header(Header)
+}
+
 #[allow(unused)]
 #[derive(Debug, Clone, Copy)]
 pub enum BoxLocation {
@@ -39,7 +45,7 @@ impl BoxLocation {
         }
     }
 
-    // Should combine and just return a tupple?
+    // Should combine and just return a tuple?
     pub fn get_horizontal_constraints(
         &self,
         blank_vertical: u16,
@@ -177,7 +183,6 @@ pub struct GuiState {
     pub show_help: bool,
     pub info_box_text: Option<String>,
 }
-
 impl GuiState {
     /// Generate a default gui_state
     pub fn default() -> Self {
@@ -220,18 +225,13 @@ impl GuiState {
             .map(|data| data.0.to_owned())
     }
 
-    /// Insert selectable gui panel into area map
-    /// Remove each time, as terminal may have been resized!
-    pub fn insert_into_panel_map(&mut self, panel: SelectablePanel, area: Rect) {
-        self.panel_map.remove(&panel);
-        self.panel_map.insert(panel, area);
-    }
-
-    /// Insert selectable gui panel into area map
-    /// Remove each time, as terminal may have been resized!
-    pub fn insert_into_header_map(&mut self, header: Header, area: Rect) {
-        self.heading_map.remove(&header);
-        self.heading_map.insert(header, area);
+	   /// Insert, or updatem header area panel into heading_map
+	   pub fn update_map(&mut self, region: Region, area: Rect) {
+		match region {
+			Region::Header(header) => 
+				self.heading_map.entry(header).and_modify(|w|*w =area).or_insert(area),
+			Region::Panel(panel) => self.panel_map.entry(panel).and_modify(|w|*w =area).or_insert(area),
+		};
     }
 
     /// Change to next selectable panel