diff --git a/go.mod b/go.mod
index 27feea0..f03fb7c 100644
--- a/go.mod
+++ b/go.mod
@@ -3,8 +3,8 @@ module github.com/go-pdfkit/forms
 go 1.27.1
 
 require (
-	github.com/go-opentype/fonts v0.12.0
-	github.com/go-opentype/opentype v0.15.0
+	github.com/go-opentype/fonts v0.14.0
+	github.com/go-opentype/opentype v0.16.0
 	github.com/go-pdfkit/pdffont v0.4.0
 	github.com/go-pdfkit/reader v0.9.0
 )
diff --git a/go.sum b/go.sum
index b9501bd..9d14dd4 100644
--- a/go.sum
+++ b/go.sum
@@ -1,9 +1,9 @@
 github.com/andybalholm/brotli v1.2.6 h1:ftYnfj6usCp+UGV5kSJ3+chpMQgU+gJf/AxsUQ52REI=
 github.com/andybalholm/brotli v1.2.6/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
-github.com/go-opentype/fonts v0.12.0 h1:gjYYkbDZBK3JHpraakgGNnXdkGq8oADerhDYjC22ILQ=
-github.com/go-opentype/fonts v0.12.0/go.mod h1:Kiep7ojxxaR2ALFeB/akcFHQyl1gG5OLIobp8EzaZSA=
-github.com/go-opentype/opentype v0.15.0 h1:ioE3eCbNZavlk/w073J3uX5FKjqhgOHQw+wZZdJ+gE4=
-github.com/go-opentype/opentype v0.15.0/go.mod h1:ZB31jTJl2mhPESXYMuUW+p36UrOabw/2+6mtyh/vNnI=
+github.com/go-opentype/fonts v0.14.0 h1:WHw7k9gkHT1pu9B2yyvd0FWyQqn/4NKFQoKhvMYt3Mo=
+github.com/go-opentype/fonts v0.14.0/go.mod h1:od2QcmdpKo7QCqo6Jb16y4GULk+h2Hhfq6x3xfvn62Q=
+github.com/go-opentype/opentype v0.16.0 h1:8FnPhPXQ0E3dVqfGlf8wh/v9g0eIFc7tlzUH4yi2Lu4=
+github.com/go-opentype/opentype v0.16.0/go.mod h1:ZB31jTJl2mhPESXYMuUW+p36UrOabw/2+6mtyh/vNnI=
 github.com/go-pdfkit/pdffont v0.4.0 h1:3CV2HnmUGHiIYuZ5dJWRLKvi7hMHGWS1RjgNYkEZ0Gk=
 github.com/go-pdfkit/pdffont v0.4.0/go.mod h1:l7es3IPbKewQF+sSgPh/bQL18jSewoI0cMjttk7uPlc=
 github.com/go-pdfkit/reader v0.9.0 h1:4U2oZXozJl+1bRyzK90sb6pQB+Qm6dCPjBAk4c71tqU=