diff --git a/Gemfile.lock b/Gemfile.lock
index 46363d46..aac7cbfe 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -257,7 +257,7 @@ GEM
       os (>= 0.9, < 2.0)
       signet (>= 0.16, < 2.a)
     hashdiff (1.2.1)
-    hexapdf (1.6.0)
+    hexapdf (1.7.0)
       cmdparse (~> 3.0, >= 3.0.3)
       geom2d (~> 0.4, >= 0.4.1)
       openssl (>= 2.2.1)