diff --git a/modules/brew.tail.sh b/modules/brew.tail.sh
index 7508979..b5e0631 100644
--- a/modules/brew.tail.sh
+++ b/modules/brew.tail.sh
@@ -127,7 +127,7 @@ then
 fi
 
 # filter the user environment
-PATH="/usr/bin:/bin:/usr/sbin:/sbin"
+PATH="@runtimePath@:/usr/bin:/bin:/usr/sbin:/sbin"
 
 FILTERED_ENV=()
 ENV_VAR_NAMES=(
diff --git a/modules/default.nix b/modules/default.nix
index c431811..ab8f1d6 100644
--- a/modules/default.nix
+++ b/modules/default.nix
@@ -134,6 +134,7 @@ let
     src = template;
     isExecutable = true;
 
+    inherit runtimePath;
     inherit (prefix) prefix library;
   };
 
diff --git a/scripts/update-brew-tail.sh b/scripts/update-brew-tail.sh
index b992c54..2dd79cd 100755
--- a/scripts/update-brew-tail.sh
+++ b/scripts/update-brew-tail.sh
@@ -22,4 +22,7 @@ cat >"${brew_tail}" <<EOF
 # nix-homebrew:
 # Run scripts/update-brew-tail.sh to update this
 EOF
-sed -e '1,/^HOMEBREW_LIBRARY=/d' "${brew_upstream}" >>"${brew_tail}"
+sed \
+	-e '1,/^HOMEBREW_LIBRARY=/d' \
+	-e 's/^PATH="/PATH="@runtimePath@:/' \
+	"${brew_upstream}" >>"${brew_tail}"