diff --git a/scripts/mk_update.py b/scripts/mk_update.py
index 6de37a4..a65f5db 100644
--- a/scripts/mk_update.py
+++ b/scripts/mk_update.py
@@ -53,7 +53,7 @@ def mk_cat_entry(dat, hw_model, major, minor, sig):
 
 def new_upd(argv):
     dat = b'GWUP'
-    m = re.match('([^-]+)-(\d+)\.(\d+)-(y?)', argv[1])
+    m = re.match(r'([^-]+)-(\d+)\.(\d+)-(y?)', argv[1])
     hw_model = name_to_hw_model[m.group(1)]
     major, minor = int(m.group(2)), int(m.group(3))
     is_bootloader = (m.group(4) == 'y')
diff --git a/scripts/srcdir.py b/scripts/srcdir.py
index bccf3ab..d0a38f2 100644
--- a/scripts/srcdir.py
+++ b/scripts/srcdir.py
@@ -21,7 +21,7 @@ objdir = sys.argv[1]
 stem = objdir[objdir.rfind('/out'):]
 
 # stem = [/<rest_of_path>]
-m = re.match('/[^/]*'*NR_LEVELS+'(/.*)?', stem)
+m = re.match(r'/[^/]*'*NR_LEVELS+r'(/.*)?', stem)
 stem = '' if m.group(1) is None else m.group(1)
 
 # srcdir = path to sources, relative to objdir