giblish.gemspec in giblish-0.2.3 vs giblish.gemspec in giblish-0.2.5

@@ -31,8 +31,12 @@
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "minitest", "~> 5.0"
 
   # Usage: spec.add_runtime_dependency "[gem name]", [[version]]
   spec.add_runtime_dependency "git", "~> 1.3"
-  spec.add_runtime_dependency "asciidoctor", "~> 1.5"
-  spec.add_runtime_dependency "asciidoctor-pdf", [">= 1.5.0.alpha.15"]
+  spec.add_runtime_dependency "asciidoctor", "1.5", ">= 1.5.6.1"
+  spec.add_runtime_dependency "asciidoctor-pdf", [">= 1.5.0.alpha.16"]
+  # needed by asciidoctor-pdf, see instructions at
+  # https://github.com/asciidoctor/asciidoctor-pdf/releases
+  spec.add_runtime_dependency "prawn-svg", "0.27", ">= 0.27.1"
+
 end