diff --git a/go.mod b/go.mod
index df7b0ed..e8bc050 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/neaas/nescript
 go 1.22.3
 
 require (
-	github.com/expr-lang/expr v1.16.8
+	github.com/expr-lang/expr v1.16.9
 	golang.org/x/crypto v0.23.0
 )
 
diff --git a/go.sum b/go.sum
index 62f138b..3ec5191 100644
--- a/go.sum
+++ b/go.sum
@@ -16,8 +16,8 @@ github.com/docker/go-connections v0.5.0 h1:USnMq7hx7gwdVZq1L49hLXaFtUdTADjXGp+uj
 github.com/docker/go-connections v0.5.0/go.mod h1:ov60Kzw0kKElRwhNs9UlUHAE/F9Fe6GLaXnqyDdmEXc=
 github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
 github.com/docker/go-units v0.5.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
-github.com/expr-lang/expr v1.16.8 h1:gu8NRwwe4OzVW8v3PNJ75NkihlNRCNM62I/9hjYn8jo=
-github.com/expr-lang/expr v1.16.8/go.mod h1:8/vRC7+7HBzESEqt5kKpYXxrxkr31SaO8r40VO/1IT4=
+github.com/expr-lang/expr v1.16.9 h1:WUAzmR0JNI9JCiF0/ewwHB1gmcGw5wW7nWt8gc6PpCI=
+github.com/expr-lang/expr v1.16.9/go.mod h1:8/vRC7+7HBzESEqt5kKpYXxrxkr31SaO8r40VO/1IT4=
 github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
 github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
 github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=