diff --git a/go.mod b/go.mod
index abd8ab5..b8d66fc 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/plexusone/omni-openrouter
 go 1.26.0
 
 require (
-	github.com/OpenRouterTeam/go-sdk v0.7.137
+	github.com/OpenRouterTeam/go-sdk v0.7.159
 	github.com/plexusone/omnillm-core v0.18.0
 	github.com/plexusone/omnivault v0.5.0
 )
diff --git a/go.sum b/go.sum
index 9cf2e43..eb29e1d 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-github.com/OpenRouterTeam/go-sdk v0.7.137 h1:BURRwLl/6s5WIMtfA3t82xoPUI0+xH/xOVkFArcmnAc=
-github.com/OpenRouterTeam/go-sdk v0.7.137/go.mod h1:8vFtUZ9I2YiDntYbck42wQhrx9DsJN5PHbViaHwTkXc=
+github.com/OpenRouterTeam/go-sdk v0.7.159 h1:NvL8+HQRnGnmQAs2lqHOwgOMHMCUMBg+OX7eMXh5+F8=
+github.com/OpenRouterTeam/go-sdk v0.7.159/go.mod h1:8vFtUZ9I2YiDntYbck42wQhrx9DsJN5PHbViaHwTkXc=
 github.com/grokify/mogo v0.74.6 h1:isdwQOfayT1E9w4il4btc2on6KY72VZnjRaRAka2iXY=
 github.com/grokify/mogo v0.74.6/go.mod h1:MUheNHoi0hatrQbS60W61CMOkcu/yYRbOQBkNnJCUQY=
 github.com/grokify/oscompat v0.4.0 h1:1orYWC7QG8vAdlDqCFULZf9eIovwc35UFzVoxGNFRSY=