diff --git a/wayback_archiver.gemspec b/wayback_archiver.gemspec
index 9582ac5..d01d319 100644
--- a/wayback_archiver.gemspec
+++ b/wayback_archiver.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 2.0.0'
 
-  spec.add_runtime_dependency 'spidr',         '~> 0.6.1' # Crawl sites
+  spec.add_runtime_dependency 'spidr',         '>= 0.6.1', '< 0.8.0' # Crawl sites
   spec.add_runtime_dependency 'robots',        '< 0.10.1' # Needed for spidr robots support
   spec.add_runtime_dependency 'concurrent-ruby', '~> 1.0' # Concurrency primitivies
   spec.add_runtime_dependency 'rexml',         '~> 3.2.5'