diff --git a/lib/build_setup.sh b/lib/build_setup.sh
index de6e79f..df3aa7f 100644
--- a/lib/build_setup.sh
+++ b/lib/build_setup.sh
@@ -17,6 +17,14 @@ case "$OS" in
       echo "  NOTE: A dialog may have opened. Complete the installation and re-run this script."
     fi
 
+    # rust is required for building Ruby from source
+    if brew list rust > /dev/null 2>&1; then
+      fmt_ok "rust already installed"
+    else
+      fmt_install "rust"
+      brew install rust
+    fi
+
     # libyaml is required for building Ruby from source
     if brew list libyaml > /dev/null 2>&1; then
       fmt_ok "libyaml already installed"
@@ -32,6 +40,14 @@ case "$OS" in
       fmt_install "build-essential"
       sudo apt-get install -y -qq build-essential libssl-dev libreadline-dev zlib1g-dev libyaml-dev
     fi
+
+    # rust is required for building Ruby from source
+    if dpkg -s rustc > /dev/null 2>&1; then
+      fmt_ok "rust already installed"
+    else
+      fmt_install "rust"
+      sudo apt-get install -y -qq rustc cargo
+    fi
     ;;
   arch)
     if pacman -Qi base-devel > /dev/null 2>&1; then
@@ -41,5 +57,12 @@ case "$OS" in
       sudo pacman -S --noconfirm --needed base-devel
     fi
 
+    # rust is required for building Ruby from source
+    if pacman -Qi rust > /dev/null 2>&1; then
+      fmt_ok "rust already installed"
+    else
+      fmt_install "rust"
+      sudo pacman -S --noconfirm --needed rust
+    fi
     ;;
 esac
diff --git a/lib/mise_setup.sh b/lib/mise_setup.sh
index 2596074..f1ed050 100644
--- a/lib/mise_setup.sh
+++ b/lib/mise_setup.sh
@@ -60,6 +60,9 @@ fmt_header "Ruby (via mise)"
 if mise which ruby > /dev/null 2>&1; then
   fmt_ok "Ruby already available via mise"
 else
+  echo 'setting mise ruby.compile=false'
+  mise settings ruby.compile=false
+
   fmt_install "Ruby (latest stable via mise)"
   mise use --global ruby@latest
   fmt_ok "Ruby installed: $(mise exec -- ruby --version)"