diff --git a/connector/metadata/configuration.go b/connector/metadata/configuration.go
index 62e0509..19f2436 100644
--- a/connector/metadata/configuration.go
+++ b/connector/metadata/configuration.go
@@ -81,11 +81,11 @@ type RuntimeFormatSettings struct {
 	// The serialization format for value
 	Value ValueFormat `json:"value" yaml:"value" jsonschema:"enum=string,enum=float64,default=string"`
 	// The serialization format for not-a-number values
-	NaN any `json:"nan" yaml:"nan" jsonschema:"oneof_type=string;number"`
+	NaN any `json:"nan" yaml:"nan" jsonschema:"oneof_type=string;number;null"`
 	// The serialization format for infinite values
-	Inf any `json:"inf" yaml:"inf" jsonschema:"oneof_type=string;number"`
+	Inf any `json:"inf" yaml:"inf" jsonschema:"oneof_type=string;number;null"`
 	// The serialization format for negative infinite values
-	NegativeInf any `json:"negative_inf" yaml:"negative_inf" jsonschema:"oneof_type=string;number"`
+	NegativeInf any `json:"negative_inf" yaml:"negative_inf" jsonschema:"oneof_type=string;number;null"`
 }
 
 // RuntimeSettings contain settings for the runtime engine
diff --git a/jsonschema/configuration.json b/jsonschema/configuration.json
index 5e1a80a..8c7977a 100644
--- a/jsonschema/configuration.json
+++ b/jsonschema/configuration.json
@@ -448,6 +448,9 @@
             },
             {
               "type": "number"
+            },
+            {
+              "type": "null"
             }
           ]
         },
@@ -458,6 +461,9 @@
             },
             {
               "type": "number"
+            },
+            {
+              "type": "null"
             }
           ]
         },
@@ -468,6 +474,9 @@
             },
             {
               "type": "number"
+            },
+            {
+              "type": "null"
             }
           ]
         }