diff --git a/pyproject.toml b/pyproject.toml
index 048ae00..1cbf4c7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ name = "edge-proxy"
 license = { file = "LICENSE" }
 dependencies = [
     "fastapi",
-    "flagsmith-flag-engine>=10,<11",
+    "flagsmith-flag-engine>=11,<12",
     "flagsmith>=5",
     "httpx",
     "marshmallow",
diff --git a/requirements-dev.lock b/requirements-dev.lock
index 17f7fc5..9bf0604 100644
--- a/requirements-dev.lock
+++ b/requirements-dev.lock
@@ -33,9 +33,9 @@ fastapi==0.110.1
     # via edge-proxy
 filelock==3.13.3
     # via virtualenv
-flagsmith==5.0.3
+flagsmith==6.2.2
     # via edge-proxy
-flagsmith-flag-engine==10.1.0
+flagsmith-flag-engine==11.0.0
     # via edge-proxy
     # via flagsmith
 freezegun==1.4.0
diff --git a/requirements.lock b/requirements.lock
index 61e9a07..02d56ee 100644
--- a/requirements.lock
+++ b/requirements.lock
@@ -25,9 +25,9 @@ click==8.1.7
     # via uvicorn
 fastapi==0.110.1
     # via edge-proxy
-flagsmith==5.0.3
+flagsmith==6.2.2
     # via edge-proxy
-flagsmith-flag-engine==10.1.0
+flagsmith-flag-engine==11.0.0
     # via edge-proxy
     # via flagsmith
 h11==0.14.0