diff --git a/autoflow/Gemfile b/autoflow/Gemfile
index 7a6c779ef4..f175275953 100644
--- a/autoflow/Gemfile
+++ b/autoflow/Gemfile
@@ -3,4 +3,4 @@
 source "https://rubygems.org"
 
 gem "asciidoctor"
-gem "asciidoctor-pdf", "~> 1.6.1"
+gem "asciidoctor-pdf", "~> 1.6.2"
diff --git a/autoflow/Gemfile.lock b/autoflow/Gemfile.lock
index 7fc8f49c8d..149704bf52 100644
--- a/autoflow/Gemfile.lock
+++ b/autoflow/Gemfile.lock
@@ -6,7 +6,7 @@ GEM
       public_suffix (>= 2.0.2, < 5.0)
     afm (0.2.2)
     asciidoctor (2.0.16)
-    asciidoctor-pdf (1.6.1)
+    asciidoctor-pdf (1.6.2)
       asciidoctor (~> 2.0)
       concurrent-ruby (~> 1.1)
       prawn (~> 2.4.0)
@@ -17,11 +17,11 @@ GEM
       safe_yaml (~> 1.0.0)
       treetop (~> 1.6.0)
     concurrent-ruby (1.1.9)
-    css_parser (1.10.0)
+    css_parser (1.11.0)
       addressable
     hashery (2.1.2)
     pdf-core (0.9.0)
-    pdf-reader (2.5.0)
+    pdf-reader (2.8.0)
       Ascii85 (~> 1.0)
       afm (~> 0.2.1)
       hashery (~> 2.0)
@@ -55,7 +55,7 @@ PLATFORMS
 
 DEPENDENCIES
   asciidoctor
-  asciidoctor-pdf (~> 1.6.1)
+  asciidoctor-pdf (~> 1.6.2)
 
 RUBY VERSION
    ruby 2.7.0p0