diff --git a/CHANGELOG.md b/CHANGELOG.md
index f92ca56..9288e25 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Breaking
+
+- Update golinstor to support LINSTOR 1.26.0, removing support for Openflex layers.
+
 ## [1.3.1] - 2024-01-30
 
 ### Changed
diff --git a/go.mod b/go.mod
index 91ae67f..0bac2ee 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.21
 toolchain go1.21.5
 
 require (
-	github.com/LINBIT/golinstor v0.49.0
+	github.com/LINBIT/golinstor v0.50.0
 	github.com/container-storage-interface/spec v1.9.0
 	github.com/haySwim/data v0.2.0
 	github.com/kubernetes-csi/csi-test/v5 v5.2.0
@@ -22,7 +22,7 @@ require (
 	k8s.io/apimachinery v0.29.1
 	k8s.io/client-go v0.29.1
 	k8s.io/mount-utils v0.29.1
-	k8s.io/utils v0.0.0-20230726121419-3b25d923346b
+	k8s.io/utils v0.0.0-20240102154912-e7106e64919e
 )
 
 require (
@@ -66,11 +66,11 @@ require (
 	golang.org/x/text v0.14.0 // indirect
 	golang.org/x/tools v0.17.0 // indirect
 	google.golang.org/appengine v1.6.8 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20231106174013-bbf56f31fb17 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240125205218-1f4bbc51befe // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	k8s.io/klog/v2 v2.120.1 // indirect
-	k8s.io/kube-openapi v0.0.0-20231010175941-2dd684a91f00 // indirect
+	k8s.io/kube-openapi v0.0.0-20240126223410-2919ad4fcfec // indirect
 	moul.io/http2curl/v2 v2.3.0 // indirect
 	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
 	sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect
diff --git a/go.sum b/go.sum
index b785a98..2f8a278 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-github.com/LINBIT/golinstor v0.49.0 h1:2Q5u0mjB+vMA8xkFfB04eT09qg1wFRxnmS1SkfK4Jr0=
-github.com/LINBIT/golinstor v0.49.0/go.mod h1:wwtsHgmgK/+Kz0g3uJoEljqBEsEfmnCXvM64JcyuiwU=
+github.com/LINBIT/golinstor v0.50.0 h1:WLdk+Jca/6BSOgmGaFqYrGEZlh0D7kjps4ak20Ntj80=
+github.com/LINBIT/golinstor v0.50.0/go.mod h1:MCkHNdHxoGw4mnt8DGsSqWNF5ZGhYFy6Lr4tQLyVBs0=
 github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
 github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
 github.com/Masterminds/semver v1.5.0 h1:H65muMkzWKEuNDnfl9d70GUjFniHKHRbFPGBuZ3QEww=
@@ -179,8 +179,8 @@ golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.6.8 h1:IhEN5q69dyKagZPYMSdIjS2HqprW324FRQZJcGqPAsM=
 google.golang.org/appengine v1.6.8/go.mod h1:1jJ3jBArFh5pcgW8gCtRJnepW8FzD1V44FJffLiz/Ds=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20231106174013-bbf56f31fb17 h1:Jyp0Hsi0bmHXG6k9eATXoYtjd6e2UzZ1SCn/wIupY14=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20231106174013-bbf56f31fb17/go.mod h1:oQ5rr10WTTMvP4A36n8JpR1OrO1BEiV4f78CneXZxkA=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240125205218-1f4bbc51befe h1:bQnxqljG/wqi4NTXu2+DJ3n7APcEA882QZ1JvhQAq9o=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240125205218-1f4bbc51befe/go.mod h1:PAREbraiVEVGVdTZsVWjSbbTtSyGbAgIIvni8a8CD5s=
 google.golang.org/grpc v1.61.0 h1:TOvOcuXn30kRao+gfcvsebNEa5iZIiLkisYEkf7R7o0=
 google.golang.org/grpc v1.61.0/go.mod h1:VUbo7IFqmF1QtCAstipjG0GIoq49KvMe9+h1jFLBNJs=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
@@ -207,12 +207,12 @@ k8s.io/client-go v0.29.1 h1:19B/+2NGEwnFLzt0uB5kNJnfTsbV8w6TgQRz9l7ti7A=
 k8s.io/client-go v0.29.1/go.mod h1:TDG/psL9hdet0TI9mGyHJSgRkW3H9JZk2dNEUS7bRks=
 k8s.io/klog/v2 v2.120.1 h1:QXU6cPEOIslTGvZaXvFWiP9VKyeet3sawzTOvdXb4Vw=
 k8s.io/klog/v2 v2.120.1/go.mod h1:3Jpz1GvMt720eyJH1ckRHK1EDfpxISzJ7I9OYgaDtPE=
-k8s.io/kube-openapi v0.0.0-20231010175941-2dd684a91f00 h1:aVUu9fTY98ivBPKR9Y5w/AuzbMm96cd3YHRTU83I780=
-k8s.io/kube-openapi v0.0.0-20231010175941-2dd684a91f00/go.mod h1:AsvuZPBlUDVuCdzJ87iajxtXuR9oktsTctW/R9wwouA=
+k8s.io/kube-openapi v0.0.0-20240126223410-2919ad4fcfec h1:iGTel2aR8vCZdxJDgmbeY0zrlXy9Qcvyw4R2sB4HLrA=
+k8s.io/kube-openapi v0.0.0-20240126223410-2919ad4fcfec/go.mod h1:Pa1PvrP7ACSkuX6I7KYomY6cmMA0Tx86waBhDUgoKPw=
 k8s.io/mount-utils v0.29.1 h1:veXlIm52Y4tm3H0pG03cOdkw0KOJxYDa0fQqhJCoqvQ=
 k8s.io/mount-utils v0.29.1/go.mod h1:9IWJTMe8tG0MYMLEp60xK9GYVeCdA3g4LowmnVi+t9Y=
-k8s.io/utils v0.0.0-20230726121419-3b25d923346b h1:sgn3ZU783SCgtaSJjpcVVlRqd6GSnlTLKgpAAttJvpI=
-k8s.io/utils v0.0.0-20230726121419-3b25d923346b/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
+k8s.io/utils v0.0.0-20240102154912-e7106e64919e h1:eQ/4ljkx21sObifjzXwlPKpdGLrCfRziVtos3ofG/sQ=
+k8s.io/utils v0.0.0-20240102154912-e7106e64919e/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
 moul.io/http2curl/v2 v2.3.0 h1:9r3JfDzWPcbIklMOs2TnIFzDYvfAZvjeavG6EzP7jYs=
 moul.io/http2curl/v2 v2.3.0/go.mod h1:RW4hyBjTWSYDOxapodpNEtX0g5Eb16sxklBqmd2RHcE=
 sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd h1:EDPBXCAspyGV4jQlpZSudPeMmr1bNJefnuqLsRAsHZo=
diff --git a/pkg/client/linstor.go b/pkg/client/linstor.go
index a91929c..7ca946f 100644
--- a/pkg/client/linstor.go
+++ b/pkg/client/linstor.go
@@ -568,7 +568,7 @@ func (s *Linstor) Attach(ctx context.Context, volId, node string, rwxBlock bool)
 
 // getDisklessFlag inspects a resource to determine the right diskless flag to use.
 func getDisklessFlag(resource *lapi.Resource) string {
-	layer := &resource.LayerObject
+	layer := resource.LayerObject
 
 	for layer != nil {
 		switch layer.Type {
@@ -1770,7 +1770,7 @@ func NodesAndConditionFromResources(ress []lapi.Resource) ([]string, *csi.Volume
 			continue
 		}
 
-		drbd := util.GetDrbdLayer(&res.LayerObject)
+		drbd := util.GetDrbdLayer(res.LayerObject)
 		if drbd != nil && drbd.PromotionScore == 0 {
 			abnormalNodes = append(abnormalNodes, res.NodeName)
 		}
diff --git a/pkg/linstor/util/util.go b/pkg/linstor/util/util.go
index d8b51fa..188a169 100644
--- a/pkg/linstor/util/util.go
+++ b/pkg/linstor/util/util.go
@@ -97,7 +97,7 @@ nextCandidate:
 
 func GetDrbdLayer(layer *lapi.ResourceLayer) *lapi.DrbdResource {
 	if layer.Type == devicelayerkind.Drbd {
-		return &layer.Drbd
+		return layer.Drbd
 	}
 
 	for i := range layer.Children {
diff --git a/pkg/volume/parameter.go b/pkg/volume/parameter.go
index 9b68ab8..5412c0b 100644
--- a/pkg/volume/parameter.go
+++ b/pkg/volume/parameter.go
@@ -361,7 +361,7 @@ func (params *Parameters) DisklessFlag() (string, error) {
 		switch l {
 		case devicelayerkind.Drbd:
 			return lc.FlagDrbdDiskless, nil
-		case devicelayerkind.Nvme, devicelayerkind.Openflex:
+		case devicelayerkind.Nvme:
 			return lc.FlagNvmeInitiator, nil
 		default:
 			continue
@@ -382,7 +382,6 @@ func ParseLayerList(s string) ([]devicelayerkind.DeviceLayerKind, error) {
 		devicelayerkind.Nvme,
 		devicelayerkind.Cache,
 		devicelayerkind.Writecache,
-		devicelayerkind.Openflex,
 		devicelayerkind.Exos,
 	}
 
diff --git a/pkg/volume/volume_test.go b/pkg/volume/volume_test.go
index d44e41a..8d7e321 100644
--- a/pkg/volume/volume_test.go
+++ b/pkg/volume/volume_test.go
@@ -76,12 +76,6 @@ func TestDisklessFlag(t *testing.T) {
 			expected: lc.FlagNvmeInitiator,
 			isError:  false,
 		},
-		{
-			name:     "openflex-like-nvme",
-			params:   volume.Parameters{LayerList: []devicelayerkind.DeviceLayerKind{devicelayerkind.Openflex, devicelayerkind.Storage}},
-			expected: lc.FlagNvmeInitiator,
-			isError:  false,
-		},
 		{
 			name:     "no-diskless-layer",
 			params:   volume.Parameters{LayerList: []devicelayerkind.DeviceLayerKind{devicelayerkind.Cache, devicelayerkind.Storage}},