diff --git a/Gemfile.lock b/Gemfile.lock
index f150013..230385a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    Ascii85 (1.1.1)
+    Ascii85 (2.0.1)
     actioncable (7.2.1)
       actionpack (= 7.2.1)
       activesupport (= 7.2.1)
@@ -156,8 +156,8 @@ GEM
     parser (3.3.5.0)
       ast (~> 2.4.1)
       racc
-    pdf-reader (2.12.0)
-      Ascii85 (~> 1.0)
+    pdf-reader (2.13.0)
+      Ascii85 (>= 1.0, < 3.0, != 2.0.0)
       afm (~> 0.2.1)
       hashery (~> 2.0)
       ruby-rc4