diff --git a/pkg/controller/onepassworditem/onepassworditem_test.go b/pkg/controller/onepassworditem/onepassworditem_test.go
index f44af35..381e336 100644
--- a/pkg/controller/onepassworditem/onepassworditem_test.go
+++ b/pkg/controller/onepassworditem/onepassworditem_test.go
@@ -285,7 +285,7 @@ var tests = []testReconcileItem{
 				"password":       []byte(password),
 				"username":       []byte(username),
 				"first-host":     []byte(firstHost),
-				"aws-access-key": []byte(awsKey),
+				"AWS-Access-Key": []byte(awsKey),
 				"ice-cream-type": []byte(iceCream),
 			},
 		},
@@ -297,6 +297,47 @@ var tests = []testReconcileItem{
 			"😄 ice-cream type": iceCream,
 		},
 	},
+	{
+		testName: "Secret from 1Password item with `-`, `_` and `.`",
+		customResource: &onepasswordv1.OnePasswordItem{
+			TypeMeta: metav1.TypeMeta{
+				Kind:       onePasswordItemKind,
+				APIVersion: onePasswordItemAPIVersion,
+			},
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      "!.my_sECReT.it3m%-_",
+				Namespace: namespace,
+			},
+			Spec: onepasswordv1.OnePasswordItemSpec{
+				ItemPath: itemPath,
+			},
+		},
+		existingSecret: nil,
+		expectedError:  nil,
+		expectedResultSecret: &corev1.Secret{
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      "my-secret.it3m",
+				Namespace: namespace,
+				Annotations: map[string]string{
+					op.VersionAnnotation: fmt.Sprint(version),
+				},
+			},
+			Data: map[string][]byte{
+				"password":          []byte(password),
+				"username":          []byte(username),
+				"first-host":        []byte(firstHost),
+				"AWS-Access-Key":    []byte(awsKey),
+				"-_ice_cream.type.": []byte(iceCream),
+			},
+		},
+		opItem: map[string]string{
+			userKey:               username,
+			passKey:               password,
+			"first host":          firstHost,
+			"AWS Access Key":      awsKey,
+			"😄 -_ice_cream.type.": iceCream,
+		},
+	},
 }
 
 func TestReconcileOnePasswordItem(t *testing.T) {
diff --git a/pkg/kubernetessecrets/kubernetes_secrets_builder.go b/pkg/kubernetessecrets/kubernetes_secrets_builder.go
index d7afd8d..48e80fa 100644
--- a/pkg/kubernetessecrets/kubernetes_secrets_builder.go
+++ b/pkg/kubernetessecrets/kubernetes_secrets_builder.go
@@ -88,16 +88,17 @@ func BuildKubernetesSecretData(fields []*onepassword.ItemField) map[string][]byt
 	secretData := map[string][]byte{}
 	for i := 0; i < len(fields); i++ {
 		if fields[i].Value != "" {
-			key := formatSecretName(fields[i].Label)
+			key := formatSecretDataName(fields[i].Label)
 			secretData[key] = []byte(fields[i].Value)
 		}
 	}
 	return secretData
 }
 
-// formatSecretName rewrites a value to be a valid Secret name or Secret data key.
+// formatSecretName rewrites a value to be a valid Secret name.
 //
-// The Secret meta.name and data keys must be valid DNS subdomain names (https://kubernetes.io/docs/concepts/configuration/secret/#overview-of-secrets)
+// The Secret meta.name and data keys must be valid DNS subdomain names
+// (https://kubernetes.io/docs/concepts/configuration/secret/#overview-of-secrets)
 func formatSecretName(value string) string {
 	if errs := kubeValidate.IsDNS1123Subdomain(value); len(errs) == 0 {
 		return value
@@ -105,7 +106,18 @@ func formatSecretName(value string) string {
 	return createValidSecretName(value)
 }
 
-var invalidDNS1123Chars = regexp.MustCompile("[^a-z0-9-]+")
+// formatSecretDataName rewrites a value to be a valid Secret data key.
+//
+// The Secret data keys must consist of alphanumeric numbers, `-`, `_` or `.`
+// (https://kubernetes.io/docs/concepts/configuration/secret/#overview-of-secrets)
+func formatSecretDataName(value string) string {
+	if errs := kubeValidate.IsConfigMapKey(value); len(errs) == 0 {
+		return value
+	}
+	return createValidSecretDataName(value)
+}
+
+var invalidDNS1123Chars = regexp.MustCompile("[^a-z0-9-.]+")
 
 func createValidSecretName(value string) string {
 	result := strings.ToLower(value)
@@ -116,5 +128,19 @@ func createValidSecretName(value string) string {
 	}
 
 	// first and last character MUST be alphanumeric
-	return strings.Trim(result, "-")
+	return strings.Trim(result, "-.")
+}
+
+var invalidDataChars = regexp.MustCompile("[^a-zA-Z0-9-._]+")
+var invalidStartEndChars = regexp.MustCompile("(^[^a-zA-Z0-9-._]+|[^a-zA-Z0-9-._]+$)")
+
+func createValidSecretDataName(value string) string {
+	result := invalidStartEndChars.ReplaceAllString(value, "")
+	result = invalidDataChars.ReplaceAllString(result, "-")
+
+	if len(result) > kubeValidate.DNS1123SubdomainMaxLength {
+		result = result[0:kubeValidate.DNS1123SubdomainMaxLength]
+	}
+
+	return result
 }
diff --git a/pkg/kubernetessecrets/kubernetes_secrets_builder_test.go b/pkg/kubernetessecrets/kubernetes_secrets_builder_test.go
index 2401450..63c0d0c 100644
--- a/pkg/kubernetessecrets/kubernetes_secrets_builder_test.go
+++ b/pkg/kubernetessecrets/kubernetes_secrets_builder_test.go
@@ -3,13 +3,13 @@ package kubernetessecrets
 import (
 	"context"
 	"fmt"
-	kubeValidate "k8s.io/apimachinery/pkg/util/validation"
 	"strings"
 	"testing"
 
 	"github.com/1Password/connect-sdk-go/onepassword"
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/types"
+	kubeValidate "k8s.io/apimachinery/pkg/util/validation"
 	"k8s.io/client-go/kubernetes"
 	"sigs.k8s.io/controller-runtime/pkg/client/fake"
 )
@@ -217,7 +217,7 @@ func ParseVaultIdAndItemIdFromPath(path string) (string, string, error) {
 }
 
 func validLabel(v string) bool {
-	if err := kubeValidate.IsDNS1123Subdomain(v); len(err) > 0 {
+	if err := kubeValidate.IsConfigMapKey(v); len(err) > 0 {
 		return false
 	}
 	return true