diff --git a/bin/blob-install-gaming-gpu-lib32 b/bin/blob-install-gaming-gpu-lib32
index c4ce61a..6a4f012 100755
--- a/bin/blob-install-gaming-gpu-lib32
+++ b/bin/blob-install-gaming-gpu-lib32
@@ -27,4 +27,7 @@ elif blob-hw-nvidia-without-gsp; then
   PACKAGES+=(lib32-nvidia-580xx-utils)
 fi
 
-(( ${#PACKAGES[@]} > 0 )) && blob-pkg-add "${PACKAGES[@]}"
+if (( ${#PACKAGES[@]} > 0 )); then
+  blob-pkg-multilib
+  blob-pkg-add "${PACKAGES[@]}"
+fi
diff --git a/bin/blob-install-gaming-steam b/bin/blob-install-gaming-steam
index a728946..513c3a8 100755
--- a/bin/blob-install-gaming-steam
+++ b/bin/blob-install-gaming-steam
@@ -6,6 +6,7 @@
 set -e
 
 echo "Installing Steam..."
+blob-pkg-multilib
 blob-pkg-add steam
 blob-install-gaming-gpu-lib32
 
diff --git a/bin/blob-pkg-multilib b/bin/blob-pkg-multilib
new file mode 100755
index 0000000..de13301
--- /dev/null
+++ b/bin/blob-pkg-multilib
@@ -0,0 +1,30 @@
+#!/bin/bash
+
+# blob:summary=Enable the multilib repository in pacman.conf if it is disabled
+# blob:requires-sudo=true
+
+pacman_conf=/etc/pacman.conf
+
+multilib_enabled() {
+  grep -q '^\[multilib\]' "$pacman_conf"
+}
+
+as_root() {
+  if (( EUID == 0 )); then
+    "$@"
+  else
+    sudo "$@"
+  fi
+}
+
+multilib_enabled && exit 0
+
+echo "Enabling the multilib repository..."
+as_root sed -i '/^#\[multilib\]$/,/^#Include/ s/^#//' "$pacman_conf"
+
+if ! multilib_enabled; then
+  echo -e "\033[31mError: Could not enable multilib in $pacman_conf\033[0m" >&2
+  exit 1
+fi
+
+as_root pacman -Syu --noconfirm
diff --git a/docs/commands.md b/docs/commands.md
index 873fd22..db7d351 100644
--- a/docs/commands.md
+++ b/docs/commands.md
@@ -379,6 +379,7 @@ of the `blob` listing.
 | `blob-pkg-drop` | Remove all the named packages from the system if they're installed (otherwise ignore). | <packages...> |
 | `blob-pkg-install` | Show a fuzzy-finder TUI for picking new Arch and OPR packages to install. | - |
 | `blob-pkg-missing` | Returns true if any of the named packages are missing from the system (or false if they're all there). | <packages...> |
+| `blob-pkg-multilib` | Enable the multilib repository in pacman.conf if it is disabled | - |
 | `blob-pkg-present` | Returns true if all of the named packages are installed on the system (or false if any of them are missing). | <packages...> |
 | `blob-pkg-remove` | Show a fuzzy-finder TUI for picking packages installed on the system to be removed. | - |