diff --git a/README.md b/README.md
index 8c73099..fbf9d23 100644
--- a/README.md
+++ b/README.md
@@ -33,8 +33,8 @@ the same virtual machines
 - **Modularization**: `qemush` launching scripts are intended to be
 stackable to reuse common `qemu` parameters in all virtual machines
 needing them
-- **Process supervision**: `qemush` uses `screen` to supervise processes
-and keep track of them
+- **Process supervision**: `qemush` uses `tmux` to supervise processes and
+keep track of them
 - **Copy-on-write**: images are formatted using `qcow2` to use less space
 on disk
 
@@ -48,7 +48,7 @@ need it
 - `bash` - the `qemush` interpreter
 - `coreutils` - used for basic OS operations
 - `sudo` - execute commands as `qemu`
-- `screen` - for process supervision
+- `tmux` - for process supervision
 - `source-highlight` - for syntax highlighting when displaying launching
 scripts
 - `pathof` - see [Installation instructions](#installation-instructions)
diff --git a/bin/qemush b/bin/qemush
index 546d450..93488a4 100755
--- a/bin/qemush
+++ b/bin/qemush
@@ -63,15 +63,20 @@ public_start() {
     QEMUSH_NAME="$1"
     shift
 
-    exec screen -S "$vm_name" "$vm_name" "$@"
+    exec tmux new-session \
+        -s "$QEMUSH_NAME" \
+        "$QEMUSH_NAME" \
+        "$@"
 }
 
 public_watch() {
-    exec screen -dr "$1"
+    [ -n "$1" ] && set -- -t "$1"
+
+    exec tmux attach "$@"
 }
 
 public_active() {
-    exec screen -ls
+    exec tmux list-sessions
 }
 
 public_ls() {