diff --git a/flagd-proxy/go.mod b/flagd-proxy/go.mod
index 7000432d7..632c2d46b 100644
--- a/flagd-proxy/go.mod
+++ b/flagd-proxy/go.mod
@@ -9,7 +9,7 @@ require (
 	buf.build/gen/go/open-feature/flagd/protocolbuffers/go v1.33.0-20240215170432-1e611e2999cc.1
 	github.com/dimiro1/banner v1.1.0
 	github.com/mattn/go-colorable v0.1.13
-	github.com/open-feature/flagd/core v0.8.2
+	github.com/open-feature/flagd/core v0.9.0
 	github.com/prometheus/client_golang v1.19.0
 	github.com/spf13/cobra v1.8.0
 	github.com/spf13/viper v1.18.2
diff --git a/flagd/go.mod b/flagd/go.mod
index f69031f6d..ad78ec010 100644
--- a/flagd/go.mod
+++ b/flagd/go.mod
@@ -12,7 +12,7 @@ require (
 	github.com/dimiro1/banner v1.1.0
 	github.com/gorilla/mux v1.8.1
 	github.com/mattn/go-colorable v0.1.13
-	github.com/open-feature/flagd/core v0.8.2
+	github.com/open-feature/flagd/core v0.9.0
 	github.com/prometheus/client_golang v1.19.0
 	github.com/rs/cors v1.10.1
 	github.com/rs/xid v1.5.0