diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7f46ca5a..6a195917 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # NVIDIA Container Toolkit Changelog
 
+* Add a `--spec-dir` option to the `nvidia-ctk cdi generate` command. This allows specs outside of `/etc/cdi` and `/var/run/cdi` to be processed.
+
 ## v1.15.0-rc.3
 * Fix bug in `nvidia-ctk hook update-ldcache` where default `--ldconfig-path` value was not applied.
 
diff --git a/cmd/nvidia-ctk/cdi/list/list.go b/cmd/nvidia-ctk/cdi/list/list.go
index 1f9d39f8..886da6e9 100644
--- a/cmd/nvidia-ctk/cdi/list/list.go
+++ b/cmd/nvidia-ctk/cdi/list/list.go
@@ -17,6 +17,7 @@
 package list
 
 import (
+	"errors"
 	"fmt"
 
 	"github.com/urfave/cli/v2"
@@ -29,7 +30,9 @@ type command struct {
 	logger logger.Interface
 }
 
-type config struct{}
+type config struct {
+	cdiSpecDirs cli.StringSlice
+}
 
 // NewCommand constructs a cdi list command with the specified logger
 func NewCommand(logger logger.Interface) *cli.Command {
@@ -55,30 +58,44 @@ func (m command) build() *cli.Command {
 		},
 	}
 
-	c.Flags = []cli.Flag{}
+	c.Flags = []cli.Flag{
+		&cli.StringSliceFlag{
+			Name:        "spec-dir",
+			Usage:       "specify the directories to scan for CDI specifications",
+			Value:       cli.NewStringSlice(cdi.DefaultSpecDirs...),
+			Destination: &cfg.cdiSpecDirs,
+		},
+	}
 
 	return &c
 }
 
 func (m command) validateFlags(c *cli.Context, cfg *config) error {
+	if len(cfg.cdiSpecDirs.Value()) == 0 {
+		return errors.New("at least one CDI specification directory must be specified")
+	}
 	return nil
 }
 
 func (m command) run(c *cli.Context, cfg *config) error {
 	registry, err := cdi.NewCache(
 		cdi.WithAutoRefresh(false),
-		cdi.WithSpecDirs(cdi.DefaultSpecDirs...),
+		cdi.WithSpecDirs(cfg.cdiSpecDirs.Value()...),
 	)
 	if err != nil {
 		return fmt.Errorf("failed to create CDI cache: %v", err)
 	}
 
-	refreshErr := registry.Refresh()
+	_ = registry.Refresh()
+	if errors := registry.GetErrors(); len(errors) > 0 {
+		m.logger.Warningf("The following registry errors were reported:")
+		for k, err := range errors {
+			m.logger.Warningf("%v: %v", k, err)
+		}
+	}
+
 	devices := registry.ListDevices()
 	m.logger.Infof("Found %d CDI devices", len(devices))
-	if refreshErr != nil {
-		m.logger.Warningf("Refreshing the CDI registry returned the following error(s): %v", refreshErr)
-	}
 	for _, device := range devices {
 		fmt.Printf("%s\n", device)
 	}