diff --git a/Gemfile.lock b/Gemfile.lock
index 1d656e3..40fd8fd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    prawn-swiss_qr_bill (0.5.3)
+    prawn-swiss_qr_bill (0.5.4)
       i18n (~> 1.8)
       matrix (~> 0.4)
       prawn (~> 2.0)
@@ -14,11 +14,11 @@ GEM
     afm (0.2.2)
     ast (2.4.2)
     chunky_png (1.4.0)
-    concurrent-ruby (1.2.3)
+    concurrent-ruby (1.3.4)
     diff-lcs (1.5.0)
     docile (1.4.0)
     hashery (2.1.2)
-    i18n (1.14.4)
+    i18n (1.14.5)
       concurrent-ruby (~> 1.0)
     matrix (0.4.2)
     parallel (1.21.0)
@@ -37,7 +37,7 @@ GEM
     rainbow (3.1.1)
     regexp_parser (2.2.0)
     rexml (3.2.5)
-    rqrcode (2.1.2)
+    rqrcode (2.2.0)
       chunky_png (~> 1.0)
       rqrcode_core (~> 1.0)
     rqrcode_core (1.2.0)