diff --git a/Gemfile.lock b/Gemfile.lock
index 50a6d0e8..e4a705dd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    bolognese (1.5.17)
+    bolognese (1.5.18)
       activesupport (>= 4.2.5)
       benchmark_methods (~> 0.7)
       bibtex-ruby (>= 5.1.0)
@@ -113,7 +113,7 @@ GEM
       mini_portile2 (~> 2.4.0)
     oj (3.10.6)
     oj_mimic_json (1.0.1)
-    optimist (3.0.0)
+    optimist (3.0.1)
     postrank-uri (1.0.24)
       addressable (>= 2.4.0)
       nokogiri (>= 1.8.0)
diff --git a/lib/bolognese/version.rb b/lib/bolognese/version.rb
index 92acf640..d0c5544c 100644
--- a/lib/bolognese/version.rb
+++ b/lib/bolognese/version.rb
@@ -1,3 +1,3 @@
 module Bolognese
-  VERSION = "1.5.17"
+  VERSION = "1.5.18"
 end