diff --git a/ldclient-rb.gemspec b/ldclient-rb.gemspec
index ee640e0a..4610ce64 100644
--- a/ldclient-rb.gemspec
+++ b/ldclient-rb.gemspec
@@ -33,7 +33,7 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency "net-http-persistent", "~> 2.9"
   spec.add_runtime_dependency "concurrent-ruby", "~> 1.0.4"
   spec.add_runtime_dependency "hashdiff", "~> 0.2"
-  spec.add_runtime_dependency "ld-celluloid-eventsource", "~> 0.10.0"
+  spec.add_runtime_dependency "ld-celluloid-eventsource", "~> 0.11.0"
   spec.add_runtime_dependency "celluloid", "~> 0.18.0.pre" # transitive dep; specified here for more control
 
   if RUBY_VERSION >= "2.2.2"