diff --git a/squib.gemspec b/squib.gemspec
index 162b293..3403d97 100644
--- a/squib.gemspec
+++ b/squib.gemspec
@@ -29,7 +29,7 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(/^(spec|samples|docs|benchmarks)\//)
   spec.require_paths = ['lib']
 
-  spec.add_runtime_dependency 'cairo',                 '~> 1.15.3'
+  spec.add_runtime_dependency 'cairo',                 '1.15.3'# Locked in
   spec.add_runtime_dependency 'gio2',                  '3.0.9' # for bug 172 # NOT 3.1.0 - broken on Linux
   spec.add_runtime_dependency 'gobject-introspection', '3.0.9' # NOT 3.1.0 - broken on Linux
   spec.add_runtime_dependency 'mercenary',             '~> 0.3.4'