diff --git a/docs/source/changelog.rst b/docs/source/changelog.rst
index bb05dc192c..0a66c76efe 100644
--- a/docs/source/changelog.rst
+++ b/docs/source/changelog.rst
@@ -4,6 +4,14 @@ Changelog
 Here's a summary of what's changed in each Corda release. For guidance on how to upgrade code from the previous
 release, see :doc:`app-upgrade-notes`.
 
+.. _changelog_v5.0:
+
+Version 5.0
+-----------
+
+* Removed ``finance-workflows`` dependency on jackson library.  The functions that used jackson (e.g. ``FinanceJSONSupport``) have been moved
+  into IRS Demo.
+
 .. _changelog_v4.2:
 
 Version 4.2
diff --git a/finance/contracts/src/test/kotlin/net/corda/finance/contracts/FinanceTypesTest.kt b/finance/contracts/src/test/kotlin/net/corda/finance/contracts/FinanceTypesTest.kt
index da2f1b1912..2b88126ec0 100644
--- a/finance/contracts/src/test/kotlin/net/corda/finance/contracts/FinanceTypesTest.kt
+++ b/finance/contracts/src/test/kotlin/net/corda/finance/contracts/FinanceTypesTest.kt
@@ -1,6 +1,6 @@
 package net.corda.finance.contracts
 
-import loadTestCalendar
+import net.corda.finance.workflows.utils.loadTestCalendar
 import org.junit.Test
 import java.time.LocalDate
 import kotlin.test.assertEquals
diff --git a/finance/workflows/build.gradle b/finance/workflows/build.gradle
index 4ccd18a4f8..c2126546f7 100644
--- a/finance/workflows/build.gradle
+++ b/finance/workflows/build.gradle
@@ -37,9 +37,6 @@ dependencies {
     
     cordapp project(':finance:contracts')
 
-    // For JSON
-    compile "com.fasterxml.jackson.core:jackson-databind:${jackson_version}"
-    
     testCompile project(':test-utils')
     testCompile project(path: ':core', configuration: 'testArtifacts')
 
diff --git a/finance/workflows/src/main/kotlin/net/corda/finance/workflows/utils/FinanceWorkflowsUtils.kt b/finance/workflows/src/main/kotlin/net/corda/finance/workflows/utils/FinanceWorkflowsUtils.kt
index c39097f6de..67ab537dc8 100644
--- a/finance/workflows/src/main/kotlin/net/corda/finance/workflows/utils/FinanceWorkflowsUtils.kt
+++ b/finance/workflows/src/main/kotlin/net/corda/finance/workflows/utils/FinanceWorkflowsUtils.kt
@@ -1,3 +1,5 @@
+package net.corda.finance.workflows.utils
+
 import net.corda.core.flows.FlowException
 import net.corda.core.serialization.CordaSerializable
 import net.corda.finance.contracts.BusinessCalendar
@@ -5,7 +7,7 @@ import net.corda.finance.contracts.BusinessCalendar
 val TEST_CALENDAR_NAMES = listOf("London", "NewYork")
 
 fun loadTestCalendar(name: String): BusinessCalendar {
-    val stream = UnknownCalendar::class.java.getResourceAsStream("net/corda/finance/workflows/utils/${name}HolidayCalendar.txt") ?: throw UnknownCalendar(name)
+    val stream = UnknownCalendar::class.java.getResourceAsStream("/net/corda/finance/workflows/utils/${name}HolidayCalendar.txt") ?: throw UnknownCalendar(name)
     return stream.use {
         BusinessCalendar(stream.reader().readText().split(",").map { BusinessCalendar.parseDateFromString(it) }.toSortedSet())
     }
diff --git a/samples/irs-demo/cordapp/contracts-irs/src/test/kotlin/net/corda/irs/contract/IRSTests.kt b/samples/irs-demo/cordapp/contracts-irs/src/test/kotlin/net/corda/irs/contract/IRSTests.kt
index e3cf3dd58e..8cc8b0f576 100644
--- a/samples/irs-demo/cordapp/contracts-irs/src/test/kotlin/net/corda/irs/contract/IRSTests.kt
+++ b/samples/irs-demo/cordapp/contracts-irs/src/test/kotlin/net/corda/irs/contract/IRSTests.kt
@@ -3,7 +3,6 @@ package net.corda.irs.contract
 import com.nhaarman.mockito_kotlin.doReturn
 import com.nhaarman.mockito_kotlin.mock
 import com.nhaarman.mockito_kotlin.whenever
-import loadTestCalendar
 import net.corda.core.contracts.Amount
 import net.corda.core.contracts.UniqueIdentifier
 import net.corda.core.crypto.generateKeyPair
@@ -15,6 +14,7 @@ import net.corda.core.utilities.seconds
 import net.corda.finance.DOLLARS
 import net.corda.finance.EUR
 import net.corda.finance.contracts.*
+import net.corda.finance.workflows.utils.loadTestCalendar
 import net.corda.node.services.api.IdentityServiceInternal
 import net.corda.testing.common.internal.addNotary
 import net.corda.testing.common.internal.testNetworkParameters
diff --git a/samples/irs-demo/cordapp/workflows-irs/build.gradle b/samples/irs-demo/cordapp/workflows-irs/build.gradle
index f140c3d4e1..46c493f132 100644
--- a/samples/irs-demo/cordapp/workflows-irs/build.gradle
+++ b/samples/irs-demo/cordapp/workflows-irs/build.gradle
@@ -14,6 +14,8 @@ dependencies {
 
     // Corda integration dependencies
     cordaCompile project(':core')
+
+    compile("com.fasterxml.jackson.module:jackson-module-kotlin:$jackson_version")
     
     // only included to control the `DemoClock` as part of the demo application
     // normally `:node` should not be depended on in any CorDapps
diff --git a/samples/irs-demo/cordapp/workflows-irs/src/main/kotlin/net.corda.irs/api/NodeInterestRates.kt b/samples/irs-demo/cordapp/workflows-irs/src/main/kotlin/net.corda.irs/api/NodeInterestRates.kt
index b1a7e500b3..494f49662c 100644
--- a/samples/irs-demo/cordapp/workflows-irs/src/main/kotlin/net.corda.irs/api/NodeInterestRates.kt
+++ b/samples/irs-demo/cordapp/workflows-irs/src/main/kotlin/net.corda.irs/api/NodeInterestRates.kt
@@ -1,7 +1,6 @@
 package net.corda.irs.api
 
 import co.paralleluniverse.fibers.Suspendable
-import loadTestCalendar
 import net.corda.core.contracts.Command
 import net.corda.core.crypto.TransactionSignature
 import net.corda.core.flows.*
@@ -16,6 +15,7 @@ import net.corda.finance.contracts.BusinessCalendar
 import net.corda.finance.contracts.Fix
 import net.corda.finance.contracts.FixOf
 import net.corda.finance.contracts.Tenor
+import net.corda.finance.workflows.utils.loadTestCalendar
 import net.corda.irs.flows.RatesFixFlow
 import net.corda.irs.math.CubicSplineInterpolator
 import net.corda.irs.math.Interpolator
diff --git a/finance/workflows/src/main/kotlin/net/corda/finance/workflows/plugin/FinanceJSONSupport.kt b/samples/irs-demo/cordapp/workflows-irs/src/main/kotlin/net.corda.irs/flows/plugin/FinanceJSONSupport.kt
similarity index 94%
rename from finance/workflows/src/main/kotlin/net/corda/finance/workflows/plugin/FinanceJSONSupport.kt
rename to samples/irs-demo/cordapp/workflows-irs/src/main/kotlin/net.corda.irs/flows/plugin/FinanceJSONSupport.kt
index c077b50bb1..78daf61170 100644
--- a/finance/workflows/src/main/kotlin/net/corda/finance/workflows/plugin/FinanceJSONSupport.kt
+++ b/samples/irs-demo/cordapp/workflows-irs/src/main/kotlin/net.corda.irs/flows/plugin/FinanceJSONSupport.kt
@@ -1,17 +1,17 @@
 @file:JvmName("FinanceJSONSupport")
 
-package net.corda.finance.workflows.plugin
+package net.corda.irs.flows.plugin
 
-import TEST_CALENDAR_NAMES
 import com.fasterxml.jackson.core.JsonGenerator
 import com.fasterxml.jackson.core.JsonParseException
 import com.fasterxml.jackson.core.JsonParser
 import com.fasterxml.jackson.databind.*
 import com.fasterxml.jackson.databind.deser.std.StringArrayDeserializer
 import com.fasterxml.jackson.databind.module.SimpleModule
-import loadTestCalendar
 import net.corda.finance.contracts.BusinessCalendar
 import net.corda.finance.contracts.Expression
+import net.corda.finance.workflows.utils.TEST_CALENDAR_NAMES
+import net.corda.finance.workflows.utils.loadTestCalendar
 import java.time.LocalDate
 import java.util.*
 
diff --git a/samples/irs-demo/src/integration-test/kotlin/net/corda/irs/IRSDemoTest.kt b/samples/irs-demo/src/integration-test/kotlin/net/corda/irs/IRSDemoTest.kt
index 32dd408ef6..5d0b5c7748 100644
--- a/samples/irs-demo/src/integration-test/kotlin/net/corda/irs/IRSDemoTest.kt
+++ b/samples/irs-demo/src/integration-test/kotlin/net/corda/irs/IRSDemoTest.kt
@@ -19,7 +19,7 @@ import net.corda.core.utilities.NetworkHostAndPort
 import net.corda.core.utilities.contextLogger
 import net.corda.core.utilities.getOrThrow
 import net.corda.core.utilities.seconds
-import net.corda.finance.workflows.plugin.registerFinanceJSONMappers
+import net.corda.irs.flows.plugin.registerFinanceJSONMappers
 import net.corda.irs.contract.InterestRateSwap
 import net.corda.irs.web.IrsDemoWebApplication
 import net.corda.test.spring.springDriver
diff --git a/samples/irs-demo/web/src/main/kotlin/net/corda/irs/web/IrsDemoWebApplication.kt b/samples/irs-demo/web/src/main/kotlin/net/corda/irs/web/IrsDemoWebApplication.kt
index 9e93b0bbe6..40ec768f76 100644
--- a/samples/irs-demo/web/src/main/kotlin/net/corda/irs/web/IrsDemoWebApplication.kt
+++ b/samples/irs-demo/web/src/main/kotlin/net/corda/irs/web/IrsDemoWebApplication.kt
@@ -6,7 +6,7 @@ import net.corda.client.rpc.CordaRPCClient
 import net.corda.client.rpc.RPCException
 import net.corda.core.messaging.CordaRPCOps
 import net.corda.core.utilities.NetworkHostAndPort
-import net.corda.finance.workflows.plugin.registerFinanceJSONMappers
+import net.corda.irs.flows.plugin.registerFinanceJSONMappers
 import org.slf4j.LoggerFactory
 import org.springframework.beans.factory.annotation.Autowired
 import org.springframework.beans.factory.annotation.Value
diff --git a/samples/simm-valuation-demo/src/main/kotlin/net/corda/vega/webplugin/SimmPlugin.kt b/samples/simm-valuation-demo/src/main/kotlin/net/corda/vega/webplugin/SimmPlugin.kt
index 9c235b303b..c98cad2742 100644
--- a/samples/simm-valuation-demo/src/main/kotlin/net/corda/vega/webplugin/SimmPlugin.kt
+++ b/samples/simm-valuation-demo/src/main/kotlin/net/corda/vega/webplugin/SimmPlugin.kt
@@ -1,8 +1,6 @@
 package net.corda.vega.webplugin
 
-import com.fasterxml.jackson.databind.ObjectMapper
 import net.corda.core.serialization.SerializationWhitelist
-import net.corda.finance.workflows.plugin.registerFinanceJSONMappers
 import net.corda.vega.api.PortfolioApi
 import net.corda.webserver.services.WebServerPluginRegistry
 import java.util.function.Function
@@ -16,5 +14,4 @@ import java.util.function.Function
 class SimmPlugin : WebServerPluginRegistry {
     override val webApis = listOf(Function(::PortfolioApi))
     override val staticServeDirs: Map<String, String> = emptyMap()
-    override fun customizeJSONSerialization(om: ObjectMapper): Unit = registerFinanceJSONMappers(om)
 }