diff --git a/libexec/rbenv b/libexec/rbenv
index 87181d7b..ec8adb2a 100755
--- a/libexec/rbenv
+++ b/libexec/rbenv
@@ -1,6 +1,10 @@
 #!/usr/bin/env bash
 set -e
 
+resolve_link() {
+  $(type -p greadlink readlink | head -1) $1
+}
+
 abs_dirname() {
   local cwd="$(pwd)"
   local path="$1"
@@ -8,7 +12,7 @@ abs_dirname() {
   while [ -n "$path" ]; do
     cd "${path%/*}"
     local name="${path##*/}"
-    path="$(readlink "$name" || true)"
+    path="$(resolve_link "$name" || true)"
   done
 
   pwd
diff --git a/libexec/rbenv-init b/libexec/rbenv-init
index 392edf40..3e670372 100755
--- a/libexec/rbenv-init
+++ b/libexec/rbenv-init
@@ -12,6 +12,10 @@ if [ -z "$shell" ]; then
   shell="$(basename "$SHELL")"
 fi
 
+resolve_link() {
+  $(type -p greadlink readlink | head -1) $1
+}
+
 abs_dirname() {
   local cwd="$(pwd)"
   local path="$1"
@@ -19,7 +23,7 @@ abs_dirname() {
   while [ -n "$path" ]; do
     cd "${path%/*}"
     local name="${path##*/}"
-    path="$(readlink "$name" || true)"
+    path="$(resolve_link "$name" || true)"
   done
 
   pwd