diff --git a/Makefile b/Makefile
index 4fbae641..1d05ed53 100644
--- a/Makefile
+++ b/Makefile
@@ -159,7 +159,7 @@ start-kafka:
 		-e KAFKA_CLIENT_PASSWORDS=adminpassword \
 		-e KAFKA_CFG_SASL_ENABLED_MECHANISMS=PLAIN \
 		-e KAFKA_CFG_SASL_MECHANISM_INTER_BROKER_PROTOCOL=PLAIN \
-		bitnami/kafka:latest
+		bitnamilegacy/kafka:4.0.0-debian-12-r10
 	printf '%s\n' \
 		'security.protocol=SASL_PLAINTEXT' \
 		'sasl.mechanism=PLAIN' \
diff --git a/go.mod b/go.mod
index a2d80fde..25c0f5a0 100644
--- a/go.mod
+++ b/go.mod
@@ -1,8 +1,6 @@
 module github.com/bmeg/grip
 
-go 1.24
-
-toolchain go1.24.2
+go 1.24.2
 
 require (
 	github.com/IBM/sarama v1.45.1
@@ -13,7 +11,7 @@ require (
 	github.com/bmeg/benchtop v0.0.0-20250827195345-9810354883b9
 	github.com/bmeg/jsonpath v0.0.0-20210207014051-cca5355553ad
 	github.com/bmeg/jsonschema/v6 v6.0.4
-	github.com/bmeg/jsonschemagraph v0.0.4-0.20250828230703-257ca9afd85a
+	github.com/bmeg/jsonschemagraph v0.0.4-0.20251017205345-236d2de9887c
 	github.com/boltdb/bolt v1.3.1
 	github.com/bytedance/sonic v1.14.0
 	github.com/casbin/casbin/v2 v2.97.0
@@ -65,6 +63,7 @@ require (
 	github.com/AzureAD/microsoft-authentication-library-for-go v1.3.2 // indirect
 	github.com/DataDog/zstd v1.5.6-0.20230824185856-869dae002e5e // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/bmeg/golib v0.0.0-20200725232156-e799a31439fc // indirect
 	github.com/bytedance/sonic/loader v0.3.0 // indirect
 	github.com/casbin/govaluate v1.2.0 // indirect
 	github.com/cespare/xxhash v1.1.0 // indirect
diff --git a/go.sum b/go.sum
index 6c09f3d7..46ddaeec 100644
--- a/go.sum
+++ b/go.sum
@@ -37,12 +37,18 @@ github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bmeg/benchtop v0.0.0-20250827195345-9810354883b9 h1:sIgPwNZKv3pSuIm/hngszbBrg3pKlZcyJ+HTzeFyjNA=
 github.com/bmeg/benchtop v0.0.0-20250827195345-9810354883b9/go.mod h1:Jy39KqCHrPeU9J3SEAdVnZ5dxE6VZm8tX899z5n6ud8=
+github.com/bmeg/golib v0.0.0-20200725232156-e799a31439fc h1:/0v/ZcXYjGs44InmjECrls31onIbVKVu1Q/E2cmnCEU=
+github.com/bmeg/golib v0.0.0-20200725232156-e799a31439fc/go.mod h1:hoSeuZtqe58ANXHuWpeODx4bDHGV36QXlCs1yrUvK6M=
 github.com/bmeg/jsonpath v0.0.0-20210207014051-cca5355553ad h1:ICgBexeLB7iv/IQz4rsP+MimOXFZUwWSPojEypuOaQ8=
 github.com/bmeg/jsonpath v0.0.0-20210207014051-cca5355553ad/go.mod h1:ft96Irkp72C7ZrUWRenG7LrF0NKMxXdRvsypo5Njhm4=
 github.com/bmeg/jsonschema/v6 v6.0.4 h1:AXFAz7G05VZkKretSSU+uacMKF8+C16ONG6pzFzzA7E=
 github.com/bmeg/jsonschema/v6 v6.0.4/go.mod h1:gTh32doM+BEZyi/TDPJEp8k3qXTckXY4ohptV2xExQY=
-github.com/bmeg/jsonschemagraph v0.0.4-0.20250828230703-257ca9afd85a h1:O0JcMLcazrwVzf8iC/RogUen4CG5UVErrBU76UkxhYQ=
-github.com/bmeg/jsonschemagraph v0.0.4-0.20250828230703-257ca9afd85a/go.mod h1:rlek2WcKAhnynqE7NJi8U+RDbUkRFr8Kqpb2SDmcW94=
+github.com/bmeg/jsonschemagraph v0.0.4-0.20251015150525-9ed100499f63 h1:vXw9uZsI22wSqJsQDnje1fetSv5iQTkXGJKRFJP8+S4=
+github.com/bmeg/jsonschemagraph v0.0.4-0.20251015150525-9ed100499f63/go.mod h1:Ve7jAQhYAMkHUiko99+2CwqXI4Ur0ty/ai8Tfa2ONz4=
+github.com/bmeg/jsonschemagraph v0.0.4-0.20251017205159-c430853877eb h1:I/dIUg+RciaJ615cFlaN1SFgmM5SuLFOiiE8QqpeYW4=
+github.com/bmeg/jsonschemagraph v0.0.4-0.20251017205159-c430853877eb/go.mod h1:Ve7jAQhYAMkHUiko99+2CwqXI4Ur0ty/ai8Tfa2ONz4=
+github.com/bmeg/jsonschemagraph v0.0.4-0.20251017205345-236d2de9887c h1:J1EhcEmL1D/YHxoMIw4HeeVv+hRMUFezNlAAlFX/a8M=
+github.com/bmeg/jsonschemagraph v0.0.4-0.20251017205345-236d2de9887c/go.mod h1:Ve7jAQhYAMkHUiko99+2CwqXI4Ur0ty/ai8Tfa2ONz4=
 github.com/boltdb/bolt v1.3.1 h1:JQmyP4ZBrce+ZQu0dY660FMfatumYDLun9hBCUVIkF4=
 github.com/boltdb/bolt v1.3.1/go.mod h1:clJnj/oiGkjum5o1McbSZDSLxVThjynRyGBgiAx27Ps=
 github.com/bufbuild/protocompile v0.4.0 h1:LbFKd2XowZvQ/kajzguUp2DC9UEIQhIq77fZZlaQsNA=
diff --git a/server/metagraphs.go b/server/metagraphs.go
index 7f56cef7..e8f0cdf2 100644
--- a/server/metagraphs.go
+++ b/server/metagraphs.go
@@ -163,6 +163,15 @@ func (server *GripServer) addFullGraph(ctx context.Context, graphName string, sc
 
 func (server *GripServer) LoadSchemas(sch *gripql.Graph, out *graph.GraphSchema) (*graph.GraphSchema, error) {
 	compiler := jsonschema.NewCompiler()
+
+	compiler.AssertFormat()
+	compiler.RegisterFormat(&jsonschema.Format{Name: "date-time", Validate: compile.ValidateFhirDateTime})
+	compiler.RegisterFormat(&jsonschema.Format{Name: "date", Validate: compile.ValidateFhirDate})
+	compiler.RegisterFormat(&jsonschema.Format{Name: "binary", Validate: compile.ValidateFhirBinary})
+	compiler.RegisterFormat(&jsonschema.Format{Name: "time", Validate: compile.ValidateFhirTime})
+	compiler.RegisterFormat(&jsonschema.Format{Name: "uuid", Validate: compile.ValidateFhirUUID})
+	compiler.RegisterFormat(&jsonschema.Format{Name: "uri", Validate: compile.ValidateFhirURI})
+
 	compiler.AssertVocabs()
 	vc, err := compile.GetHyperMediaVocab()
 	if err != nil {