diff --git a/go.mod b/go.mod
index 8dec5ea..97682ea 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/plexusone/omni-anthropic
 go 1.26.0
 
 require (
-	github.com/anthropics/anthropic-sdk-go v1.71.0
+	github.com/anthropics/anthropic-sdk-go v1.73.0
 	github.com/plexusone/omnillm-core v0.18.0
 )
 
diff --git a/go.sum b/go.sum
index 912dac3..b51dc45 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-github.com/anthropics/anthropic-sdk-go v1.71.0 h1:DK9xG3s5t+xUIOp+R+1LIRjkU/wG57YyQO3630+gYOE=
-github.com/anthropics/anthropic-sdk-go v1.71.0/go.mod h1:x+lPk/cCl48uRegeP0hlYYBN1b7bEBTveInIMgLicnY=
+github.com/anthropics/anthropic-sdk-go v1.73.0 h1:brLt0oVV6LH0YcG6O6G3pBnIVDJQ/QPoXul+OJHXEFc=
+github.com/anthropics/anthropic-sdk-go v1.73.0/go.mod h1:x+lPk/cCl48uRegeP0hlYYBN1b7bEBTveInIMgLicnY=
 github.com/bahlo/generic-list-go v0.2.0 h1:5sz/EEAK+ls5wF+NeqDpk5+iNdMDXrh3z3nPnH1Wvgk=
 github.com/bahlo/generic-list-go v0.2.0/go.mod h1:2KvAjgMlE5NNynlg/5iLrrCCZ2+5xWbdbCW3pNTGyYg=
 github.com/buger/jsonparser v1.2.0 h1:4EFcvK1kD4jyj6YqNK6skK6w+y7FHHBR+XBCtxwu/6g=