diff --git a/vendor.conf b/vendor.conf
index 5f9695f4..a7f38d7d 100644
--- a/vendor.conf
+++ b/vendor.conf
@@ -11,7 +11,7 @@ github.com/containernetworking/cni v0.4.0
 google.golang.org/grpc v1.0.1-GA https://github.com/grpc/grpc-go
 github.com/opencontainers/selinux v1.0.0-rc1
 github.com/opencontainers/go-digest v1.0.0-rc0
-github.com/opencontainers/runtime-tools f5c82b3918bdfc3ed4b594dcfab4d1554beaf992
+github.com/opencontainers/runtime-tools 96cb7c28a32209a530b94bceb491e0137d1f5849
 github.com/opencontainers/runc b263a43430ac6996a4302b891688544225197294
 github.com/opencontainers/image-spec v1.0.0-rc6
 github.com/opencontainers/runtime-spec v1.0.0-rc5
diff --git a/vendor/github.com/opencontainers/runtime-tools/generate/generate.go b/vendor/github.com/opencontainers/runtime-tools/generate/generate.go
index 5ca0e315..42b68231 100644
--- a/vendor/github.com/opencontainers/runtime-tools/generate/generate.go
+++ b/vendor/github.com/opencontainers/runtime-tools/generate/generate.go
@@ -714,12 +714,15 @@ func (g *Generator) ClearPreStartHooks() {
 	if g.spec == nil {
 		return
 	}
+	if g.spec.Hooks == nil {
+		return
+	}
 	g.spec.Hooks.Prestart = []rspec.Hook{}
 }
 
 // AddPreStartHook add a prestart hook into g.spec.Hooks.Prestart.
 func (g *Generator) AddPreStartHook(path string, args []string) {
-	g.initSpec()
+	g.initSpecHooks()
 	hook := rspec.Hook{Path: path, Args: args}
 	g.spec.Hooks.Prestart = append(g.spec.Hooks.Prestart, hook)
 }
@@ -729,12 +732,15 @@ func (g *Generator) ClearPostStopHooks() {
 	if g.spec == nil {
 		return
 	}
+	if g.spec.Hooks == nil {
+		return
+	}
 	g.spec.Hooks.Poststop = []rspec.Hook{}
 }
 
 // AddPostStopHook adds a poststop hook into g.spec.Hooks.Poststop.
 func (g *Generator) AddPostStopHook(path string, args []string) {
-	g.initSpec()
+	g.initSpecHooks()
 	hook := rspec.Hook{Path: path, Args: args}
 	g.spec.Hooks.Poststop = append(g.spec.Hooks.Poststop, hook)
 }
@@ -744,12 +750,15 @@ func (g *Generator) ClearPostStartHooks() {
 	if g.spec == nil {
 		return
 	}
+	if g.spec.Hooks == nil {
+		return
+	}
 	g.spec.Hooks.Poststart = []rspec.Hook{}
 }
 
 // AddPostStartHook adds a poststart hook into g.spec.Hooks.Poststart.
 func (g *Generator) AddPostStartHook(path string, args []string) {
-	g.initSpec()
+	g.initSpecHooks()
 	hook := rspec.Hook{Path: path, Args: args}
 	g.spec.Hooks.Poststart = append(g.spec.Hooks.Poststart, hook)
 }
diff --git a/vendor/github.com/opencontainers/runtime-tools/generate/spec.go b/vendor/github.com/opencontainers/runtime-tools/generate/spec.go
index 4498aa14..463be3f4 100644
--- a/vendor/github.com/opencontainers/runtime-tools/generate/spec.go
+++ b/vendor/github.com/opencontainers/runtime-tools/generate/spec.go
@@ -17,6 +17,13 @@ func (g *Generator) initSpecAnnotations() {
 	}
 }
 
+func (g *Generator) initSpecHooks() {
+	g.initSpec()
+	if g.spec.Hooks == nil {
+		g.spec.Hooks = &rspec.Hooks{}
+	}
+}
+
 func (g *Generator) initSpecLinux() {
 	g.initSpec()
 	if g.spec.Linux == nil {
diff --git a/vendor/github.com/opencontainers/runtime-tools/validate/validate.go b/vendor/github.com/opencontainers/runtime-tools/validate/validate.go
index 73aea024..b3b1bbff 100644
--- a/vendor/github.com/opencontainers/runtime-tools/validate/validate.go
+++ b/vendor/github.com/opencontainers/runtime-tools/validate/validate.go
@@ -131,8 +131,13 @@ func (v *Validator) CheckRootfsPath() (msgs []string) {
 		msgs = append(msgs, fmt.Sprintf("root.path is %q, but it MUST be a child of %q", v.spec.Root.Path, absBundlePath))
 	}
 
-	return
+	if v.spec.Platform.OS == "windows" {
+		if v.spec.Root.Readonly {
+			msgs = append(msgs, "root.readonly field MUST be omitted or false when platform.os is windows")
+		}
+	}
 
+	return
 }
 
 // CheckSemVer checks v.spec.Version