diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6b17993..710ac2a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## v2.1
+- Made the installer compatible with minimal Calculinux environments by replacing `install -m` with `cp` followed by `chmod`.
+
+
 ## Current
 
 - Bash shell integration is installed automatically through `~/.bashrc`.
diff --git a/install.sh b/install.sh
index 8d7c8f0..bfcc1bf 100755
--- a/install.sh
+++ b/install.sh
@@ -27,8 +27,10 @@ then
 fi
 
 mkdir -p "$LIBDIR" "$BINDIR"
-install -m 755 "$SCRIPT_DIR/tui/tui.py" "$LIBDIR/tui.py"
-install -m 644 "$SCRIPT_DIR/tui/tui-shell.bash" "$LIBDIR/tui-shell.bash"
+cp "$SCRIPT_DIR/tui/tui.py" "$LIBDIR/tui.py"
+chmod 755 "$LIBDIR/tui.py"
+cp "$SCRIPT_DIR/tui/tui-shell.bash" "$LIBDIR/tui-shell.bash"
+chmod 644 "$LIBDIR/tui-shell.bash"
 
 # Optional standalone entry point. The normal command is the Bash function
 # loaded from tui-shell.bash; this wrapper is useful for diagnostics.