diff --git a/.gitignore b/.gitignore
index 7de512d..acb2ca6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 .devenv/
 .direnv/
+.ghcup/
 node_modules/
 
 .pre-commit-config.yaml
diff --git a/lib/utils.sh b/lib/utils.sh
index b442b0b..540c3ac 100755
--- a/lib/utils.sh
+++ b/lib/utils.sh
@@ -1,5 +1,9 @@
+asdf_plugin_path() {
+  echo "$(dirname "$(dirname "$0")")"
+}
+
 ghcup_bin_dir() {
-  echo "$ASDF_PLUGIN_PATH/.ghcup/bin"
+  echo "$(asdf_plugin_path)/.ghcup/bin"
 }
 
 check_ghcup() {
@@ -8,7 +12,7 @@ check_ghcup() {
     curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | env \
       BOOTSTRAP_HASKELL_MINIMAL=1 \
       BOOTSTRAP_HASKELL_NONINTERACTIVE=1 \
-      GHCUP_INSTALL_BASE_PREFIX="$ASDF_PLUGIN_PATH" \
+      GHCUP_INSTALL_BASE_PREFIX="$(asdf_plugin_path)" \
       sh
   fi
 }
diff --git a/test/install.bats b/test/install.bats
index f9ebba4..3a64bf9 100644
--- a/test/install.bats
+++ b/test/install.bats
@@ -5,15 +5,12 @@ setup() {
   load 'test_helper/bats-assert/load'
   DIR="$( cd "$( dirname "$BATS_TEST_FILENAME" )" >/dev/null 2>&1 && pwd )"
   PATH="$DIR/../bin:$PATH"
-  export ASDF_PLUGIN_PATH=$(mktemp -dt asdf-plugin-XXXX)
   export ASDF_INSTALL_PATH=$(mktemp -dt asdf-XXXX)
 }
 
 teardown() {
   rm -rf "${ASDF_INSTALL_PATH}"
   unset ASDF_INSTALL_PATH
-  rm -rf "$ASDF_PLUGIN_PATH"
-  unset ASDF_PLUGIN_PATH
 }
 
 @test "cabal 3.6.2.0" {
diff --git a/test/list-all.bats b/test/list-all.bats
index 84215bb..6305f9e 100644
--- a/test/list-all.bats
+++ b/test/list-all.bats
@@ -5,12 +5,6 @@ setup() {
   load 'test_helper/bats-assert/load'
   DIR="$( cd "$( dirname "$BATS_TEST_FILENAME" )" >/dev/null 2>&1 && pwd )"
   PATH="$DIR/../bin:$PATH"
-  export ASDF_PLUGIN_PATH=$(mktemp -dt asdf-plugin-XXXX)
-}
-
-teardown() {
-  rm -rf "$ASDF_PLUGIN_PATH"
-  unset ASDF_PLUGIN_PATH
 }
 
 @test "cabal" {