diff --git a/vmpooler.gemspec b/vmpooler.gemspec
index 35abb9c..1fcb619 100644
--- a/vmpooler.gemspec
+++ b/vmpooler.gemspec
@@ -27,7 +27,7 @@ Gem::Specification.new do |s|
   s.add_dependency 'opentelemetry-instrumentation-redis', '~> 0.7.0'
   s.add_dependency 'opentelemetry-instrumentation-sinatra', '~> 0.7.1'
   s.add_dependency 'opentelemetry-resource_detectors', '~> 0.7.0'
-  s.add_dependency 'opentelemetry-sdk', '~> 0.7.0'
+  s.add_dependency 'opentelemetry-sdk', '>= 0.7', '< 0.9'
   s.add_dependency 'pickup', '~> 0.0.11'
   s.add_dependency 'prometheus-client', '~> 2.0'
   s.add_dependency 'puma', '~> 4.3'