diff --git a/setup.py b/setup.py
index 4f88a66..18671eb 100644
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,7 @@
         "Programming Language :: Python :: 3.10",
     ],
     keywords="amplitude, python, backend",
-    install_requires=["dataclasses-json>=0.6.7","amplitude_analytics>=1.1.1"],
+    install_requires=["dataclasses-json>=0.6.7","amplitude_analytics>=1.1.1","sseclient-py~=1.8.0"],
     package_dir={"": "src"},
     packages=["amplitude_experiment"],
     include_package_data=True,