diff --git a/build.sbt b/build.sbt
index 182c3c77876..6022d6e61f7 100644
--- a/build.sbt
+++ b/build.sbt
@@ -287,7 +287,7 @@ val circeV                  = "0.14.14"
 val circeGenericExtrasV     = "0.14.4"
 val circeYamlV              = "0.15.2"     // 0.15.3 drops Scala 2.12
 val jwtCirceV               = "11.0.2"
-val jacksonV                = "2.18.2"     // 2.18.3+ breaks ContentTypesSchemas.schemaForPlain
+val jacksonV                = "2.18.4"
 val catsV                   = "2.13.0"
 val catsEffectV             = "3.5.7"
 val everitSchemaV           = "1.14.5"
diff --git a/docs/Changelog.md b/docs/Changelog.md
index 5e67f8825f2..3db5f865053 100644
--- a/docs/Changelog.md
+++ b/docs/Changelog.md
@@ -277,13 +277,13 @@ description: Stay informed with detailed changelogs covering new features, impro
        }
      }
   ```
-* [#8352](https://github.com/TouK/nussknacker/pull/8352) Updated dependencies:
+* [#8352](https://github.com/TouK/nussknacker/pull/8352)[#8449](https://github.com/TouK/nussknacker/pull/8449) Updated dependencies:
   * Caffeine Cache 3.1.8 -> 3.2.1
   * Cats Effect 3.5.4 -> 3.5.7
   * Cats 2.12.0 -> 2.13.0
   * Circe 0.14.10 -> 0.14.14
   * HikariCP 6.2.1 -> 6.3.1
-  * Jackson 2.17.2 -> 2.18.2
+  * Jackson 2.17.2 -> 2.18.4
   * Netty 4.1.119.Final -> 4.1.123.Final
   * PostgreSQL JDBC driver 42.7.4 -> 42.7.7
   * sttp 3.9.8 -> 3.11.0
diff --git a/utils/schemed-kafka-components-utils/src/main/scala/pl/touk/nussknacker/engine/schemedkafka/schemaregistry/ContentTypes.scala b/utils/schemed-kafka-components-utils/src/main/scala/pl/touk/nussknacker/engine/schemedkafka/schemaregistry/ContentTypes.scala
index a02d583ee2d..6bd4114753c 100644
--- a/utils/schemed-kafka-components-utils/src/main/scala/pl/touk/nussknacker/engine/schemedkafka/schemaregistry/ContentTypes.scala
+++ b/utils/schemed-kafka-components-utils/src/main/scala/pl/touk/nussknacker/engine/schemedkafka/schemaregistry/ContentTypes.scala
@@ -9,8 +9,6 @@ object ContentTypes extends Enumeration {
 }
 
 object ContentTypesSchemas {
-  val schemaForJson: OpenAPIJsonSchema = OpenAPIJsonSchema("{}")
-  // note: "" deserializes to com.fasterxml.jackson.databind.node.MissingNode,
-  // which causes NPE when using Jackson 2.18.3+, because from this version on it decodes to null
-  val schemaForPlain: OpenAPIJsonSchema = OpenAPIJsonSchema("")
+  val schemaForJson: OpenAPIJsonSchema  = OpenAPIJsonSchema("{}")
+  val schemaForPlain: OpenAPIJsonSchema = OpenAPIJsonSchema("true")
 }
diff --git a/utils/schemed-kafka-components-utils/src/test/scala/pl/touk/nussknacker/engine/schemedkafka/schemaregistry/ContentTypesSchemasTest.scala b/utils/schemed-kafka-components-utils/src/test/scala/pl/touk/nussknacker/engine/schemedkafka/schemaregistry/ContentTypesSchemasTest.scala
new file mode 100644
index 00000000000..dbc9b602182
--- /dev/null
+++ b/utils/schemed-kafka-components-utils/src/test/scala/pl/touk/nussknacker/engine/schemedkafka/schemaregistry/ContentTypesSchemasTest.scala
@@ -0,0 +1,12 @@
+package pl.touk.nussknacker.engine.schemedkafka.schemaregistry
+
+import org.scalatest.funsuite.AnyFunSuite
+import org.scalatest.matchers.should.Matchers
+
+class ContentTypesSchemasTest extends AnyFunSuite with Matchers {
+
+  test("schemaForJson is distinct from schemaForPlain") {
+    ContentTypesSchemas.schemaForJson shouldNot be(ContentTypesSchemas.schemaForPlain)
+  }
+
+}