diff --git a/up.fish b/up.fish
new file mode 100644
index 0000000..bbf49b3
--- /dev/null
+++ b/up.fish
@@ -0,0 +1,15 @@
+function up
+    if test (count $argv) -eq 0
+        cd ..
+        return
+    end
+
+    if test $argv[1] = /
+        cd /
+        return
+    end
+
+    # Emulate the same logic of trimming the PWD
+    set -l target (string replace -r ".*/$argv[1]" "" $PWD)  
+    cd $PWD[1..- (string length -- $target)]
+end