diff --git a/go.mod b/go.mod
index b69a5ac..4d967f8 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module git.dev.alexdunmow.com/block/themes/y2k
 go 1.26.4
 
 require (
-	git.dev.alexdunmow.com/block/core v0.12.4
+	git.dev.alexdunmow.com/block/core v0.13.1
 	github.com/a-h/templ v0.3.1020
 )
 
diff --git a/go.sum b/go.sum
index b642f03..1a3defe 100644
--- a/go.sum
+++ b/go.sum
@@ -1,9 +1,7 @@
 connectrpc.com/connect v1.20.0 h1:6TNDAB+WeNd2uolWNlYczB5E0KNNaVMNUEx8JEUsPmQ=
 connectrpc.com/connect v1.20.0/go.mod h1:A2ygJrukXwWy32vkCAAHNVguZrqZ+jeZ9rGRnGR4dN4=
-git.dev.alexdunmow.com/block/core v0.11.1 h1:5b3Ps9CLor2FGyxw/Qovt27AGZKR5Xi1JZGi/TfliTA=
-git.dev.alexdunmow.com/block/core v0.11.1/go.mod h1:ZwzEOxRDLDfrhQGqo6hLw01/C1z/aS4Dm9ljQMl0Bg4=
-git.dev.alexdunmow.com/block/core v0.12.4 h1:F/K4DkAuBlVQivcnWNECORfUQfct0E1JOfmg+61uLzw=
-git.dev.alexdunmow.com/block/core v0.12.4/go.mod h1:ZwzEOxRDLDfrhQGqo6hLw01/C1z/aS4Dm9ljQMl0Bg4=
+git.dev.alexdunmow.com/block/core v0.13.1 h1:KirP6dRMkarHcfLjnln6cijA3cGBseUYna0kTq077Fo=
+git.dev.alexdunmow.com/block/core v0.13.1/go.mod h1:ZwzEOxRDLDfrhQGqo6hLw01/C1z/aS4Dm9ljQMl0Bg4=
 github.com/BurntSushi/toml v1.6.0 h1:dRaEfpa2VI55EwlIW72hMRHdWouJeRF7TPYhI+AUQjk=
 github.com/BurntSushi/toml v1.6.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
 github.com/a-h/templ v0.3.1020 h1:ypAT/L5ySWEnZ6Zft/5yfoWXYYkhFNvEFOeeqecg4tw=
diff --git a/helpers.go b/helpers.go
index 686978c..600154d 100644
--- a/helpers.go
+++ b/helpers.go
@@ -16,13 +16,6 @@ func getStringOr(content map[string]any, key, dflt string) string {
 	return dflt
 }
 
-// getBool extracts a boolean value, defaulting to dflt when absent.
-func getBool(content map[string]any, key string, dflt bool) bool {
-	if v, ok := content[key].(bool); ok {
-		return v
-	}
-	return dflt
-}
 
 // getStringSlice extracts a []string from a JSON array of strings.
 func getStringSlice(content map[string]any, key string) []string {