diff --git a/CHANGELOG.md b/CHANGELOG.md
index ec71501..14cb23d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 ***
 
+
+#### Change log v.1.0.20
+
+**Fix**: merges PR #180, `TypeError: can't dup NilClass`. Credit to Adam Trepanier (@adam-e-trepanier) for the merge.
+
 #### Change log v.1.0.19
 
 **Fix**: fixes font height and width detection issue. Issue #179. Credit to @5anchezzz for opening the issue.
diff --git a/lib/combine_pdf/version.rb b/lib/combine_pdf/version.rb
index 811021f..d5bc74a 100644
--- a/lib/combine_pdf/version.rb
+++ b/lib/combine_pdf/version.rb
@@ -1,3 +1,3 @@
 module CombinePDF
-  VERSION = '1.0.19'.freeze
+  VERSION = '1.0.20'.freeze
 end