diff --git a/.github/actions/integration-test/action.yml b/.github/actions/integration-test/action.yml
new file mode 100644
index 00000000..e6cf68b0
--- /dev/null
+++ b/.github/actions/integration-test/action.yml
@@ -0,0 +1,77 @@
+name: Integration test
+description: Runs the tests in ./internal/sessiontest/client_integration_test.go against the given IRMA server and keyshare server artifacts.
+inputs:
+  test-ref:
+    description: The branch, tag or SHA to check out the tests from
+    required: true
+  irma-server-artifact:
+    description: Artifact url or id of the irma server artifact to use
+    required: true
+  keyshare-server-artifact:
+    description: Artifact url or id of the keyshare server artifact to use
+    required: true
+runs:
+  using: composite
+  steps:
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: ^1.18
+
+    - name: Download IRMA server artifact (url)
+      if: startsWith(inputs.irma-server-artifact, 'https://')
+      run: curl --create-dirs -L -o ./bin-is/irma-linux-amd64 ${{ inputs.irma-server-artifact }}
+      shell: bash
+
+    - name: Download IRMA server artifact (artifact id)
+      if: ${{ !startsWith(inputs.irma-server-artifact, 'https://') }}
+      uses: actions/download-artifact@v3
+      with:
+        name: ${{ inputs.irma-server-artifact }}
+        path: bin-is
+
+    - name: Set file permissions for bin-is
+      run: chmod +x ./bin-is/irma-linux-amd64
+      shell: bash
+
+    - name: Download keyshare server artifact (url)
+      if: startsWith(inputs.keyshare-server-artifact, 'https://')
+      run: curl --create-dirs -L -o ./bin-ks/irma-linux-amd64 ${{ inputs.keyshare-server-artifact }}
+      shell: bash
+
+    - name: Download keyshare server artifact (artifact id)
+      if: ${{ !startsWith(inputs.keyshare-server-artifact, 'https://') }}
+      uses: actions/download-artifact@v3
+      with:
+        name: ${{ inputs.keyshare-server-artifact }}
+        path: bin-ks
+
+    - name: Set file permissions for bin-ks
+      run: chmod +x ./bin-ks/irma-linux-amd64
+      shell: bash
+
+    - name: Run keyshare server utilities
+      run: docker-compose up -d
+      shell: bash
+
+    # We add & at the end of each command to run them in the background.
+    - name: Run IRMA server
+      run: ./bin-is/irma-linux-amd64 server -s testdata/irma_configuration --url http://localhost:port -p 48682 -k testdata/privatekeys &
+      shell: bash
+
+    - name: Run keyshare server
+      run: ./bin-ks/irma-linux-amd64 keyshare server -c testdata/configurations/keyshareserver.yml &
+      shell: bash
+
+    - name: Checkout test code
+      uses: actions/checkout@v3
+      with:
+        ref: ${{ inputs.test-ref }}
+        path: irmago_test_checkout
+
+    - name: Run integration tests
+      working-directory: irmago_test_checkout
+      env:
+        IRMAGO_INTEGRATION_TESTS: Y
+      run: go test -v -run TestClientIntegration -p 1 ./...
+      shell: bash
diff --git a/.github/workflows/status-checks.yml b/.github/workflows/status-checks.yml
index 79ccb521..5a50447a 100644
--- a/.github/workflows/status-checks.yml
+++ b/.github/workflows/status-checks.yml
@@ -29,10 +29,17 @@ jobs:
 
       - name: Build artifact
         uses: ./.github/actions/build
+        id: build
         with:
           os: ${{ matrix.os }}
           arch: ${{ matrix.arch }}
 
+      - name: Upload artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: irma-${{ matrix.os }}-${{ matrix.arch }}
+          path: ${{ steps.build.outputs.artifact-name }}
+
   docker-build:
     runs-on: ubuntu-latest
     steps:
@@ -89,6 +96,43 @@ jobs:
       - name: Run all unit tests
         run: docker-compose run test -v ./...
 
+  # The integration tests are split into two jobs, one for the client side and one for the server side.
+  # They test whether irmago versions with different versions of gabi can interact.
+  # We assume that the keyshare server is always kept up to date, so we don't test using older versions of the keyshare server.
+  integration-test-clientside: # Checks whether irmaclient interacts with older IRMA servers
+    needs: build
+    strategy:
+      matrix:
+        irma-server:
+          - v0.13.2
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Run integration test
+        uses: ./.github/actions/integration-test
+        with:
+          test-ref: ${{ github.ref }}
+          irma-server-artifact: https://github.com/privacybydesign/irmago/releases/download/${{ matrix.irma-server }}/irma-linux-amd64
+          keyshare-server-artifact: irma-linux-amd64 # Current build
+
+  integration-test-serverside: # Checks whether IRMA server interacts with older irmaclients
+    needs: build
+    strategy:
+      matrix:
+        irmaclient-ref:
+          - f0023141ec429d912e329665f937d05b178a3fee # v0.13.2 (integration test did not exist when version tag was created)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Run integration test
+        uses: ./.github/actions/integration-test
+        with:
+          test-ref: ${{ matrix.irmaclient-ref }}
+          irma-server-artifact: irma-linux-amd64 # Current build
+          keyshare-server-artifact: irma-linux-amd64 # Current build
+
   analyze:
     needs: build
     runs-on: ubuntu-latest
diff --git a/internal/sessiontest/client_integration_test.go b/internal/sessiontest/client_integration_test.go
new file mode 100644
index 00000000..cbc8a71d
--- /dev/null
+++ b/internal/sessiontest/client_integration_test.go
@@ -0,0 +1,76 @@
+package sessiontest
+
+/*
+This file contains the integration tests for the irmaclient library.
+A subset of tests from session_test.go and keyshare_test.go can be run against specific versions of the IRMA server and keyshare server.
+In this way we test the backwards compatibility of the irmaclient library.
+The other way around, the backwards compatibility of the IRMA server and keyshare server, can be tested by checking out the
+source code of an older irmago version and run an older version of this test against a newer server version.
+This integration test is being introduced after irmago v0.13.2, so older irmaclient versions cannot be tested using this setup.
+
+This test only runs if you pass IRMAGO_INTEGRATION_TESTS=Y to go test, i.e.: IRMAGO_INTEGRATION_TESTS=Y go test -run TestClientIntegration -p 1 ./...
+Before running this test, you should start the IRMA server and keyshare server manually.
+
+First, ensure you installed the desired irma version.
+To start the IRMA server, run the following command:
+$ irma server -s testdata/irma_configuration --url http://localhost:port -p 48682 -k testdata/privatekeys
+
+To start the keyshare server, run the following commands:
+$ docker-compose up -d
+$ irma keyshare server -c testdata/configurations/keyshareserver.yml
+*/
+
+import (
+	"os"
+	"strings"
+	"testing"
+
+	irma "github.com/privacybydesign/irmago"
+	"github.com/privacybydesign/irmago/internal/test"
+)
+
+func TestClientIntegration(t *testing.T) {
+	if !strings.HasPrefix(strings.ToUpper(os.Getenv("IRMAGO_INTEGRATION_TESTS")), "Y") {
+		t.Skip("set IRMAGO_INTEGRATION_TESTS=Y to run this test")
+	}
+
+	// Tests without keyshare server.
+	t.Run("DisclosureSession", apply(testDisclosureSession, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("NoAttributeDisclosureSession", apply(testNoAttributeDisclosureSession, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("EmptyDisclosure", apply(testEmptyDisclosure, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("SigningSession", apply(testSigningSession, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("IssuanceSession", apply(testIssuanceSession, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("MultipleIssuanceSession", apply(testMultipleIssuanceSession, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("DefaultCredentialValidity", apply(testDefaultCredentialValidity, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("IssuanceDisclosureEmptyAttributes", apply(testIssuanceDisclosureEmptyAttributes, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("IssuanceOptionalZeroLengthAttributes", apply(testIssuanceOptionalZeroLengthAttributes, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("IssuanceOptionalSetAttributes", apply(testIssuanceOptionalSetAttributes, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("IssuanceSameAttributesNotSingleton", apply(testIssuanceSameAttributesNotSingleton, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("IssuancePairing", apply(testIssuancePairing, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("PairingRejected", apply(testPairingRejected, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("LargeAttribute", apply(testLargeAttribute, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("IssuanceSingletonCredential", apply(testIssuanceSingletonCredential, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("UnsatisfiableDisclosureSession", apply(testUnsatisfiableDisclosureSession, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("AttributeByteEncoding", apply(testAttributeByteEncoding, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("IssuedCredentialIsStored", apply(testIssuedCredentialIsStored, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("BlindIssuanceSession", apply(testBlindIssuanceSession, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("DisablePairing", apply(testDisablePairing, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("DisclosureMultipleAttrs", apply(testDisclosureMultipleAttrs, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("CombinedSessionMultipleAttributes", apply(testCombinedSessionMultipleAttributes, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("ConDisCon", apply(testConDisCon, nil, optionReuseServer, optionForceNoAuth))
+	t.Run("OptionalDisclosure", apply(testOptionalDisclosure, nil, optionReuseServer, optionForceNoAuth))
+
+	// Test with keyshare server.
+	t.Run("KeyshareSessions", func(t *testing.T) {
+		storage := test.CreateTestStorage(t)
+		client, handler := parseExistingStorage(t, storage)
+		defer test.ClearTestStorage(t, client, handler.storage)
+
+		// Fresh irmaclient storage was used, so we need to do some initialization.
+		client.KeyshareEnroll(irma.NewSchemeManagerIdentifier("test"), nil, "12345", "en")
+		req := getIssuanceRequest(false)
+		doSession(t, req, client, nil, nil, nil, nil, optionReuseServer, optionForceNoAuth)
+
+		keyshareSessions(t, client, nil, optionReuseServer, optionForceNoAuth)
+	})
+}
diff --git a/internal/sessiontest/helper_dosession_test.go b/internal/sessiontest/helper_dosession_test.go
index c1c59b09..11567e51 100644
--- a/internal/sessiontest/helper_dosession_test.go
+++ b/internal/sessiontest/helper_dosession_test.go
@@ -46,6 +46,7 @@ const (
 	optionRetryPost
 	optionIgnoreError
 	optionReuseServer // makes doSession assume a requestor server with authentication is used
+	optionForceNoAuth // makes doSession assume no authentication is required (useful when reused server has no authentication)
 	optionClientWait
 	optionWait
 	optionPrePairingClient
@@ -104,7 +105,7 @@ func startServer(t *testing.T, opts option, irmaServer *IrmaServer, conf interfa
 
 // startSessionAtServer starts an IRMA session using the specified session request, against an IRMA server
 // or library, as determined by the type of serv.
-func startSessionAtServer(t *testing.T, serv stopper, conf interface{}, request interface{}) *server.SessionPackage {
+func startSessionAtServer(t *testing.T, serv stopper, useJWTs bool, request interface{}) *server.SessionPackage {
 	switch s := serv.(type) {
 	case *IrmaServer:
 		qr, requestorToken, frontendRequest, err := s.irma.StartSession(request, nil)
@@ -116,15 +117,9 @@ func startSessionAtServer(t *testing.T, serv stopper, conf interface{}, request
 		}
 	default:
 		var (
-			sesPkg  server.SessionPackage
-			err     error
-			useJWTs bool
+			sesPkg server.SessionPackage
+			err    error
 		)
-		if conf != nil {
-			useJWTs = !conf.(*requestorserver.Configuration).DisableRequestorAuthentication
-		} else {
-			useJWTs = true
-		}
 		url := requestorServerURL
 		if useJWTs {
 			skbts, err := os.ReadFile(filepath.Join(testdata, "jwtkeys", "requestor1-sk.pem"))
@@ -153,7 +148,7 @@ func startSessionAtClient(t *testing.T, sesPkg *server.SessionPackage, client *i
 }
 
 // getSessionResult retrieves the session result from the IRMA server or library.
-func getSessionResult(t *testing.T, sesPkg *server.SessionPackage, serv stopper, opts option) *server.SessionResult {
+func getSessionResult(t *testing.T, sesPkg *server.SessionPackage, serv stopper, useJWTs bool, opts option) *server.SessionResult {
 	waitSessionFinished(t, serv, sesPkg.Token, opts.enabled(optionWait))
 
 	switch s := serv.(type) {
@@ -162,28 +157,35 @@ func getSessionResult(t *testing.T, sesPkg *server.SessionPackage, serv stopper,
 		require.NoError(t, err)
 		return result
 	default:
-		var res string
-		err := irma.NewHTTPTransport(requestorServerURL+"/session/"+string(sesPkg.Token), false).Get("result-jwt", &res)
-		require.NoError(t, err)
+		if useJWTs {
+			var res string
+			err := irma.NewHTTPTransport(requestorServerURL+"/session/"+string(sesPkg.Token), false).Get("result-jwt", &res)
+			require.NoError(t, err)
 
-		bts, err := os.ReadFile(jwtPrivkeyPath)
-		require.NoError(t, err)
-		sk, err := jwt.ParseRSAPrivateKeyFromPEM(bts)
-		require.NoError(t, err)
+			bts, err := os.ReadFile(jwtPrivkeyPath)
+			require.NoError(t, err)
+			sk, err := jwt.ParseRSAPrivateKeyFromPEM(bts)
+			require.NoError(t, err)
 
-		// Validate JWT
-		claims := struct {
-			jwt.RegisteredClaims
-			*server.SessionResult
-		}{}
-		_, err = jwt.ParseWithClaims(res, &claims, func(_ *jwt.Token) (interface{}, error) {
-			return &sk.PublicKey, nil
-		})
-		require.NoError(t, err)
+			// Validate JWT
+			claims := struct {
+				jwt.RegisteredClaims
+				*server.SessionResult
+			}{}
+			_, err = jwt.ParseWithClaims(res, &claims, func(_ *jwt.Token) (interface{}, error) {
+				return &sk.PublicKey, nil
+			})
+			require.NoError(t, err)
 
-		// Check default expiration time
-		require.True(t, claims.IssuedAt.Add(irma.DefaultJwtValidity*time.Second).Equal(claims.ExpiresAt.Time))
-		return claims.SessionResult
+			// Check default expiration time
+			require.True(t, claims.IssuedAt.Add(irma.DefaultJwtValidity*time.Second).Equal(claims.ExpiresAt.Time))
+			return claims.SessionResult
+		} else {
+			var res server.SessionResult
+			err := irma.NewHTTPTransport(requestorServerURL+"/session/"+string(sesPkg.Token), false).Get("result", &res)
+			require.NoError(t, err)
+			return &res
+		}
 	}
 }
 
@@ -264,7 +266,14 @@ func doSession(
 		defer serv.Stop()
 	}
 
-	sesPkg := startSessionAtServer(t, serv, conf, request)
+	useJWTs := true
+	if opts.enabled(optionForceNoAuth) {
+		useJWTs = false
+	} else if rconf, ok := conf.(*requestorserver.Configuration); ok {
+		useJWTs = !rconf.DisableRequestorAuthentication
+	}
+
+	sesPkg := startSessionAtServer(t, serv, useJWTs, request)
 	sessionHandler, clientChan := createSessionHandler(t, opts, client, sesPkg, frontendOptionsHandler, pairingHandler)
 
 	if frontendOptionsHandler != nil {
@@ -293,7 +302,7 @@ func doSession(
 		return &requestorSessionResult{nil, nil, clientResult.Missing, dismisser}
 	}
 
-	serverResult := getSessionResult(t, sesPkg, serv, opts)
+	serverResult := getSessionResult(t, sesPkg, serv, useJWTs, opts)
 	require.Equal(t, sesPkg.Token, serverResult.Token)
 
 	if opts.enabled(optionRetryPost) {
diff --git a/internal/sessiontest/keyshare_test.go b/internal/sessiontest/keyshare_test.go
index 205e8efa..bc4efae5 100644
--- a/internal/sessiontest/keyshare_test.go
+++ b/internal/sessiontest/keyshare_test.go
@@ -62,7 +62,7 @@ func TestKeyshareSessions(t *testing.T) {
 	keyshareSessions(t, client, irmaServer)
 }
 
-func keyshareSessions(t *testing.T, client *irmaclient.Client, irmaServer *IrmaServer) {
+func keyshareSessions(t *testing.T, client *irmaclient.Client, irmaServer *IrmaServer, options ...option) {
 	id := irma.NewAttributeTypeIdentifier("irma-demo.RU.studentCard.studentID")
 	expiry := irma.Timestamp(irma.NewMetadataAttribute(0).Expiry())
 	issuanceRequest := getCombinedIssuanceRequest(id)
@@ -73,15 +73,15 @@ func keyshareSessions(t *testing.T, client *irmaclient.Client, irmaServer *IrmaS
 			Attributes:       map[string]string{"email": "testusername"},
 		},
 	)
-	doSession(t, issuanceRequest, client, irmaServer, nil, nil, nil)
+	doSession(t, issuanceRequest, client, irmaServer, nil, nil, nil, options...)
 
 	disclosureRequest := getDisclosureRequest(id)
 	disclosureRequest.AddSingle(irma.NewAttributeTypeIdentifier("test.test.mijnirma.email"), nil, nil)
-	doSession(t, disclosureRequest, client, irmaServer, nil, nil, nil)
+	doSession(t, disclosureRequest, client, irmaServer, nil, nil, nil, options...)
 
 	sigRequest := getSigningRequest(id)
 	sigRequest.AddSingle(irma.NewAttributeTypeIdentifier("test.test.mijnirma.email"), nil, nil)
-	doSession(t, sigRequest, client, irmaServer, nil, nil, nil)
+	doSession(t, sigRequest, client, irmaServer, nil, nil, nil, options...)
 }
 
 func TestIssuanceCombinedMultiSchemeSession(t *testing.T) {
diff --git a/internal/sessiontest/session_test.go b/internal/sessiontest/session_test.go
index d4b020a9..800ecec7 100644
--- a/internal/sessiontest/session_test.go
+++ b/internal/sessiontest/session_test.go
@@ -987,7 +987,8 @@ func TestStatusEventsSSE(t *testing.T) {
 
 	// Start a session at the server
 	request := irma.NewDisclosureRequest(irma.NewAttributeTypeIdentifier("irma-demo.RU.studentCard.studentID"))
-	sesPkg := startSessionAtServer(t, rs, conf, request)
+	useJWTs := !conf.DisableRequestorAuthentication
+	sesPkg := startSessionAtServer(t, rs, useJWTs, request)
 
 	// Start SSE connections to the SSE endpoints
 	url := fmt.Sprintf("http://localhost:%d/session/%s/statusevents", conf.Port, sesPkg.Token)