diff --git a/pyproject.toml b/pyproject.toml
index 233285e..291e010 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ exclude = [
 
 [tool.poetry.dependencies]
 python = ">=3.10"
-launchdarkly-server-sdk = ">=9.4.0"
+launchdarkly-server-sdk = ">=9.18.3"
 opentelemetry-sdk = ">=1.24.0"
 
 [tool.poetry.group.dev.dependencies]
@@ -46,7 +46,6 @@ optional = true
 [tool.poetry.group.docs.dependencies]
 sphinx = ">=6,<8"
 sphinx-rtd-theme = ">=1.3,<4.0"
-certifi = ">=2018.4.16"
 expiringdict = ">=1.1.4"
 pyrfc3339 = ">=1.0"
 jsonpickle = ">1.4.1"