diff --git a/installers/install-nix.sh b/installers/install-nix.sh
index 405975f..9275a63 100755
--- a/installers/install-nix.sh
+++ b/installers/install-nix.sh
@@ -18,7 +18,7 @@ if [ "${USER:-}" == "root" ] || [ "${UID:-}" == "0" ]; then
 fi
 
 # Download the Nix installer and it's signature from NixOS.org
-curl -so install-nix https://releases.nixos.org/nix/nix-2.18.1/install
+curl -so install-nix https://releases.nixos.org/nix/nix-2.18.7/install
 
 # Run the installer
 sh ./install-nix
@@ -35,7 +35,13 @@ EOF
 rm -f ./install-nix
 
 # Enable flakes and the nix command
-mkdir -p ~/.config/nix
-cat <<EOF > ~/.config/nix/nix.conf
+NIX_CONF_DIR=~/.config/nix
+NIX_CONF_FILE=${NIX_CONF_DIR}/nix.conf
+mkdir -p ${NIX_CONF_DIR}
+cat <<EOF > ${NIX_CONF_FILE}
 experimental-features = flakes nix-command
 EOF
+# Conditionally add a link to system certificates for nix
+if [ -f /etc/ssl/certs/ca-certificates.crt ]; then
+  echo 'ssl-cert-file = /etc/ssl/certs/ca-certificates.crt' >> ${NIX_CONF_FILE}
+fi