diff --git a/code/tools/pkgresources/Scripts_python/postinstall b/code/tools/pkgresources/Scripts_python/postinstall
index 70aba55d..4f4ce320 100755
--- a/code/tools/pkgresources/Scripts_python/postinstall
+++ b/code/tools/pkgresources/Scripts_python/postinstall
@@ -1,4 +1,4 @@
 #!/bin/sh
 
 # undo the removal prevention done in preinstall
-/usr/bin/chflags -fR noschg,nouchg /usr/local/munki/Python.framework/Versions/3.*
\ No newline at end of file
+/usr/bin/chflags -fR noschg,nouchg "$3/usr/local/munki/Python.framework/Versions/"3.*
\ No newline at end of file
diff --git a/code/tools/pkgresources/Scripts_python/preinstall b/code/tools/pkgresources/Scripts_python/preinstall
index 6dd93530..0daf6a9b 100755
--- a/code/tools/pkgresources/Scripts_python/preinstall
+++ b/code/tools/pkgresources/Scripts_python/preinstall
@@ -4,7 +4,7 @@
 # prevent installer from removing a version currently in use
 # (must update this script when we move to a new Python version)
 for OLDVERS in 3.7 3.8 3.9 ; do
-    if [ -d "/usr/local/munki/Python.framework/Versions/$OLDVERS" ] ; then
-        /usr/bin/chflags -fR schg,uchg /usr/local/munki/Python.framework/Versions/$OLDVERS
+    if [ -d "$3/usr/local/munki/Python.framework/Versions/$OLDVERS" ] ; then
+        /usr/bin/chflags -fR schg,uchg "$3/usr/local/munki/Python.framework/Versions/$OLDVERS"
     fi
 done