diff --git a/flake.nix b/flake.nix
index 653f84a..c747ad1 100644
--- a/flake.nix
+++ b/flake.nix
@@ -44,6 +44,7 @@
           buildInputs = inputs ++ (with pkgs; [
             mailutils
             wireguard-tools
+            antlr
           ]) ++ (if pkgs.stdenv.isLinux then with pkgs; [
             postfix
           ] else []);
diff --git a/server/update_antlr_parser.sh b/server/update_antlr_parser.sh
new file mode 100755
index 0000000..e2e6005
--- /dev/null
+++ b/server/update_antlr_parser.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+ROOT=$(git rev-parse --show-toplevel)/server
+
+# aliases
+cd $ROOT/handlers/aliases && antlr4 -Dlanguage=Go -o ast/parser Aliases.g4
+
+# sshd_config
+cd $ROOT/handlers/sshd_config && antlr4 -Dlanguage=Go -o ast/parser Config.g4
+cd $ROOT/handlers/sshd_config/match-parser && antlr4 -Dlanguage=Go -o parser Match.g4
+
+# ssh_config
+cd $ROOT/handlers/ssh_config && antlr4 -Dlanguage=Go -o ast/parser Config.g4
+cd $ROOT/handlers/ssh_config/match-parser && antlr4 -Dlanguage=Go -o parser Match.g4
+
+# hosts
+cd $ROOT/handlers/hosts && antlr4 -Dlanguage=Go -o ast/parser Hosts.g4
+
diff --git a/update_antlr_parser.sh b/update_antlr_parser.sh
deleted file mode 100755
index c6f8295..0000000
--- a/update_antlr_parser.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/bin/sh
-
-GIT_ROOT=$(git rev-parse --show-toplevel)
-
-# aliases
-cd $GIT_ROOT/handlers/aliases && antlr4 -Dlanguage=Go -o ast/parser Aliases.g4
-
-# sshd_config
-cd $GIT_ROOT/handlers/sshd_config && antlr4 -Dlanguage=Go -o ast/parser Config.g4
-cd $GIT_ROOT/handlers/sshd_config/match-parser && antlr4 -Dlanguage=Go -o parser Match.g4
-
-# ssh_config
-cd $GIT_ROOT/handlers/ssh_config && antlr4 -Dlanguage=Go -o ast/parser Config.g4
-cd $GIT_ROOT/handlers/ssh_config/match-parser && antlr4 -Dlanguage=Go -o parser Match.g4
-
-# hosts
-cd $GIT_ROOT/handlers/hosts && antlr4 -Dlanguage=Go -o ast/parser Hosts.g4
-