diff --git a/integrations/schemas/ort-configuration-schema.json b/integrations/schemas/ort-configuration-schema.json
index aeca317b5b835..5ef42c0327d67 100644
--- a/integrations/schemas/ort-configuration-schema.json
+++ b/integrations/schemas/ort-configuration-schema.json
@@ -382,9 +382,6 @@
                 "sslrootcert": {
                     "type": "string"
                 },
-                "parallelTransactions": {
-                    "type": "integer"
-                },
                 "connectionTimeout": {
                     "type": "integer"
                 },
diff --git a/model/src/main/kotlin/config/PostgresConnection.kt b/model/src/main/kotlin/config/PostgresConnection.kt
index 815b128af7b52..69ae8b08c7937 100644
--- a/model/src/main/kotlin/config/PostgresConnection.kt
+++ b/model/src/main/kotlin/config/PostgresConnection.kt
@@ -19,10 +19,12 @@
 
 package org.ossreviewtoolkit.model.config
 
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties
 import com.fasterxml.jackson.annotation.JsonInclude
 import com.fasterxml.jackson.annotation.JsonInclude.Include
 import com.fasterxml.jackson.annotation.JsonProperty
 
+@JsonIgnoreProperties("parallelTransactions")
 data class PostgresConnection(
     /**
      * The database URL in JDBC format.
@@ -72,11 +74,6 @@ data class PostgresConnection(
     @JsonInclude(Include.NON_NULL)
     val sslrootcert: String? = null,
 
-    /**
-     * The number of parallel transactions to use for the storage dispatcher.
-     */
-    val parallelTransactions: Int = 5,
-
     /**
      * The maximum number of milliseconds to wait for connections from the pool. For details see the
      * [Hikari documentation](https://github.com/brettwooldridge/HikariCP#frequently-used).