diff --git a/src/command/BashCommand.swift b/src/command/BashCommand.swift
index e54acaa4..f1511c19 100644
--- a/src/command/BashCommand.swift
+++ b/src/command/BashCommand.swift
@@ -1,8 +1,16 @@
 struct BashCommand: Command {
     let bashCommand: String
 
-    func run() {
-        let process = try! Process.run(URL(filePath: "/bin/bash"), arguments: ["-c", bashCommand])
-        process.waitUntilExit()
+    func run() async {
+        precondition(Thread.current.isMainThread)
+        await withCheckedContinuation { (continuation: CheckedContinuation<(), Never>) in
+            let process = Process()
+            process.executableURL = URL(filePath: "/bin/bash")
+            process.arguments = ["-c", bashCommand]
+            process.terminationHandler = { _ in
+                continuation.resume()
+            }
+            try! process.run()
+        }
     }
 }
diff --git a/src/command/Command.swift b/src/command/Command.swift
index 218dc9e6..fc97f350 100644
--- a/src/command/Command.swift
+++ b/src/command/Command.swift
@@ -1,3 +1,3 @@
 protocol Command {
-    func run()
+    func run() async
 }
diff --git a/src/command/CompositeCommand.swift b/src/command/CompositeCommand.swift
index 280eda62..89b08d52 100644
--- a/src/command/CompositeCommand.swift
+++ b/src/command/CompositeCommand.swift
@@ -1,9 +1,10 @@
 struct CompositeCommand: Command {
     let subCommands: [Command]
 
-    func run() {
+    func run() async {
+        precondition(Thread.current.isMainThread)
         for command in subCommands {
-            command.run()
+            await command.run()
         }
     }
 }
diff --git a/src/command/FocusCommand.swift b/src/command/FocusCommand.swift
index a1e6e26d..25d999df 100644
--- a/src/command/FocusCommand.swift
+++ b/src/command/FocusCommand.swift
@@ -7,7 +7,8 @@ struct FocusCommand: Command {
         case parent, child, floating, tiling, toggle_tiling_floating
     }
 
-    func run() {
+    func run() async {
+        precondition(Thread.current.isMainThread)
         // todo
     }
 }
diff --git a/src/command/LayoutCommand.swift b/src/command/LayoutCommand.swift
index 390813d2..82e3ae63 100644
--- a/src/command/LayoutCommand.swift
+++ b/src/command/LayoutCommand.swift
@@ -11,7 +11,8 @@ struct LayoutCommand: Command {
         case floating
     }
 
-    func run() {
+    func run() async {
+        precondition(Thread.current.isMainThread)
         // todo
     }
 }
diff --git a/src/command/ModeCommand.swift b/src/command/ModeCommand.swift
index 6ba0ca47..11abee45 100644
--- a/src/command/ModeCommand.swift
+++ b/src/command/ModeCommand.swift
@@ -1,7 +1,8 @@
 struct ModeCommand: Command {
     let idToActivate: String
 
-    func run() {
+    func run() async {
+        precondition(Thread.current.isMainThread)
         for (modeId, mode) in config.modes {
             if modeId == idToActivate {
                 mode.activate()
diff --git a/src/command/MoveThroughCommand.swift b/src/command/MoveThroughCommand.swift
index 1285b4e0..98d8f281 100644
--- a/src/command/MoveThroughCommand.swift
+++ b/src/command/MoveThroughCommand.swift
@@ -5,7 +5,8 @@ struct MoveThroughCommand: Command {
         case left, down, up, right
     }
 
-    func run() {
+    func run() async {
+        precondition(Thread.current.isMainThread)
 
     }
 }
diff --git a/src/command/ReloadConfigCommand.swift b/src/command/ReloadConfigCommand.swift
index dcaa23b1..fa42b1ad 100644
--- a/src/command/ReloadConfigCommand.swift
+++ b/src/command/ReloadConfigCommand.swift
@@ -1,5 +1,6 @@
 struct ReloadConfigCommand: Command {
-    func run() {
+    func run() async {
+        precondition(Thread.current.isMainThread)
         reloadConfig()
         refresh()
     }
diff --git a/src/command/WorkspaceCommand.swift b/src/command/WorkspaceCommand.swift
index 4a931be2..235d6804 100644
--- a/src/command/WorkspaceCommand.swift
+++ b/src/command/WorkspaceCommand.swift
@@ -1,7 +1,8 @@
 struct WorkspaceCommand : Command {
     let workspaceName: String
 
-    func run() {
+    func run() async {
+        precondition(Thread.current.isMainThread)
         switchToWorkspace(Workspace.get(byName: workspaceName))
     }
 }
diff --git a/src/config/Config.swift b/src/config/Config.swift
index 33e7d37e..e9bc4242 100644
--- a/src/config/Config.swift
+++ b/src/config/Config.swift
@@ -39,7 +39,9 @@ class HotkeyBinding {
     }
 
     func activate() {
-        hotKey = HotKey(key: key, modifiers: modifiers, keyUpHandler: command.run)
+        hotKey = HotKey(key: key, modifiers: modifiers, keyUpHandler: { [self] in
+            Task { await command.run() }
+        })
     }
 
     func deactivate() {
diff --git a/src/refresh.swift b/src/refresh.swift
index b021ed5e..14509529 100644
--- a/src/refresh.swift
+++ b/src/refresh.swift
@@ -3,6 +3,7 @@ import Foundation
 /// It's one of the most important function of the whole application.
 /// The function is called as a feedback response on every user input
 func refresh(startSession: Bool = true, endSession: Bool = true) {
+    precondition(Thread.current.isMainThread)
     debug("refresh (startSession=\(startSession), endSession=\(endSession)) \(Date.now.formatted(date: .abbreviated, time: .standard))")
     if startSession {
         NSWorkspace.activeApp = nil