diff --git a/06-chat-messaging-retention/kei-nan/go.mod b/06-chat-messaging-retention/kei-nan/go.mod
index 084e92f..a8f6869 100644
--- a/06-chat-messaging-retention/kei-nan/go.mod
+++ b/06-chat-messaging-retention/kei-nan/go.mod
@@ -5,7 +5,7 @@ go 1.23
 // Dependencies are resolved by `go mod tidy` during the containerized build
 // (see build.sh / Makefile). Both are pure-Go so the binary builds static.
 require (
-	github.com/redis/go-redis/v9 v9.7.0
+	github.com/redis/go-redis/v9 v9.7.3
 	gopkg.in/yaml.v3 v3.0.1
 )
 
diff --git a/06-chat-messaging-retention/kei-nan/go.sum b/06-chat-messaging-retention/kei-nan/go.sum
index caca62d..0859e8f 100644
--- a/06-chat-messaging-retention/kei-nan/go.sum
+++ b/06-chat-messaging-retention/kei-nan/go.sum
@@ -6,8 +6,8 @@ github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj
 github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
-github.com/redis/go-redis/v9 v9.7.0 h1:HhLSs+B6O021gwzl+locl0zEDnyNkxMtf/Z3NNBMa9E=
-github.com/redis/go-redis/v9 v9.7.0/go.mod h1:f6zhXITC7JUJIlPEiBOTXxJgPLdZcA93GewI7inzyWw=
+github.com/redis/go-redis/v9 v9.7.3 h1:YpPyAayJV+XErNsatSElgRZZVCwXX9QzkKYNvO7x0wM=
+github.com/redis/go-redis/v9 v9.7.3/go.mod h1:bGUrSggJ9X9GUmZpZNEOQKaANxSGgOEBRltRTZHSvrA=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=