diff --git a/Gemfile.lock b/Gemfile.lock
index fa208f30..9abcec5a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -395,7 +395,7 @@ GEM
     pdf-core (0.9.0)
     pdf-inspector (1.3.0)
       pdf-reader (>= 1.0, < 3.0.a)
-    pdf-reader (2.5.0)
+    pdf-reader (2.9.2)
       Ascii85 (~> 1.0)
       afm (~> 0.2.1)
       hashery (~> 2.0)