diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8fb66db..111557f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,24 @@ All notable changes to the Apify Go client are documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.8.1] - 2026-08-11
+
+### Changed
+
+- Internal consistency cleanup: request methods that used raw HTTP-method string literals
+  (`"PUT"`, `"DELETE"`, `"POST"`) now use the standard `net/http` method constants, matching
+  the rest of the client. No public interface change.
+- Replaced the non-idiomatic `http_MethodHead` constant with `http.MethodHead`.
+- Extracted the repeated `"urlSigningSecretKey"` literal (used by the dataset and key-value-
+  store public-URL builders) into a single named constant.
+- Bumped `ClientVersion` to `0.8.1`.
+
+### Fixed
+
+- Corrected the `TaskClient.Unpublish` doc comment, which incorrectly claimed write permission
+  to both the task and its Actor is required; verified against the live API that only write
+  permission to the task itself is needed.
+
 ## [0.8.0] - 2026-08-10
 
 ### Added
diff --git a/common.go b/common.go
index 00be199..8938e8e 100644
--- a/common.go
+++ b/common.go
@@ -2,6 +2,7 @@ package apify
 
 import (
 	"encoding/json"
+	"net/http"
 	"net/url"
 	"runtime"
 	"strconv"
@@ -40,12 +41,9 @@ func isNotFound(err error) bool {
 	}
 	return apiErr.Type == recordNotFoundType ||
 		apiErr.Type == recordOrTokenNotFoundType ||
-		apiErr.HTTPMethod == http_MethodHead
+		apiErr.HTTPMethod == http.MethodHead
 }
 
-// http_MethodHead avoids importing net/http here just for the constant.
-const http_MethodHead = "HEAD"
-
 // QueryParams is an ordered collection of query parameters that omits absent values and
 // encodes booleans as 1/0, matching the Apify API conventions.
 type QueryParams struct {
diff --git a/dataset.go b/dataset.go
index ff9437a..c1a39b2 100644
--- a/dataset.go
+++ b/dataset.go
@@ -276,7 +276,7 @@ func (c *DatasetClient) CreateItemsPublicURL(ctx context.Context, options Datase
 		return "", err
 	}
 	if present {
-		if secret := extractString(dataset.Extra, "urlSigningSecretKey"); secret != "" {
+		if secret := extractString(dataset.Extra, urlSigningSecretExtraKey); secret != "" {
 			sig := signStorageContent(secret, dataset.ID, expiresInSecs)
 			params.AddString("signature", &sig)
 		}
diff --git a/key_value_store.go b/key_value_store.go
index 45eeaee..f8a5bc6 100644
--- a/key_value_store.go
+++ b/key_value_store.go
@@ -259,7 +259,7 @@ func (c *KeyValueStoreClient) GetRecordPublicURL(ctx context.Context, key string
 		return "", err
 	}
 	if present {
-		if secret := extractString(store.Extra, "urlSigningSecretKey"); secret != "" {
+		if secret := extractString(store.Extra, urlSigningSecretExtraKey); secret != "" {
 			sig := createHmacSignature(secret, key)
 			params.AddString("signature", &sig)
 		}
@@ -278,7 +278,7 @@ func (c *KeyValueStoreClient) CreateKeysPublicURL(ctx context.Context, expiresIn
 		return "", err
 	}
 	if present {
-		if secret := extractString(store.Extra, "urlSigningSecretKey"); secret != "" {
+		if secret := extractString(store.Extra, urlSigningSecretExtraKey); secret != "" {
 			sig := signStorageContent(secret, store.ID, expiresInSecs)
 			params.AddString("signature", &sig)
 		}
diff --git a/request_queue.go b/request_queue.go
index d2e2e99..ea76524 100644
--- a/request_queue.go
+++ b/request_queue.go
@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"net/http"
 )
 
 // ListRequestsOptions configures [RequestQueueClient.ListRequests].
@@ -119,7 +120,7 @@ func (c *RequestQueueClient) UpdateRequest(ctx context.Context, request RequestQ
 	if err != nil {
 		return RequestQueueOperationInfo{}, err
 	}
-	resp, err := c.ctx.http.call(ctx, "PUT", url, body, contentTypeJSON, defaultRequestTimeout)
+	resp, err := c.ctx.http.call(ctx, http.MethodPut, url, body, contentTypeJSON, defaultRequestTimeout)
 	if err != nil {
 		return RequestQueueOperationInfo{}, err
 	}
@@ -129,7 +130,7 @@ func (c *RequestQueueClient) UpdateRequest(ctx context.Context, request RequestQ
 // DeleteRequest deletes a request by ID.
 func (c *RequestQueueClient) DeleteRequest(ctx context.Context, id string) error {
 	url := c.ctx.mergedParams(c.withClientKey(NewQueryParams())).applyToURL(c.ctx.subURL("requests/" + encodePathSegment(id)))
-	_, err := c.ctx.http.call(ctx, "DELETE", url, nil, "", defaultRequestTimeout)
+	_, err := c.ctx.http.call(ctx, http.MethodDelete, url, nil, "", defaultRequestTimeout)
 	if err != nil && !isNotFound(err) {
 		return err
 	}
@@ -240,7 +241,7 @@ func (c *RequestQueueClient) ProlongRequestLock(ctx context.Context, id string,
 	params.AddInt("lockSecs", &lockSecs).AddBool("forefront", &forefront)
 	c.withClientKey(params)
 	url := c.ctx.mergedParams(params).applyToURL(c.ctx.subURL("requests/" + encodePathSegment(id) + "/lock"))
-	resp, err := c.ctx.http.call(ctx, "PUT", url, nil, "", defaultRequestTimeout)
+	resp, err := c.ctx.http.call(ctx, http.MethodPut, url, nil, "", defaultRequestTimeout)
 	if err != nil {
 		return nil, err
 	}
@@ -254,7 +255,7 @@ func (c *RequestQueueClient) DeleteRequestLock(ctx context.Context, id string, f
 	params.AddBool("forefront", &forefront)
 	c.withClientKey(params)
 	url := c.ctx.mergedParams(params).applyToURL(c.ctx.subURL("requests/" + encodePathSegment(id) + "/lock"))
-	_, err := c.ctx.http.call(ctx, "DELETE", url, nil, "", defaultRequestTimeout)
+	_, err := c.ctx.http.call(ctx, http.MethodDelete, url, nil, "", defaultRequestTimeout)
 	if err != nil && !isNotFound(err) {
 		return err
 	}
diff --git a/run.go b/run.go
index f4b5637..9224e1b 100644
--- a/run.go
+++ b/run.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"io"
 	"math/rand"
+	"net/http"
 	"strconv"
 	"time"
 )
@@ -176,7 +177,7 @@ func (c *RunClient) Charge(ctx context.Context, options RunChargeOptions) error
 	body := mustMarshal(map[string]any{"eventName": options.EventName, "count": count})
 	url := c.ctx.subURL("charge")
 	headers := map[string]string{chargeIdempotencyHeader: idempotencyKey}
-	_, err := c.ctx.http.callWithHeaders(ctx, "POST", url, body, contentTypeJSON, headers, defaultRequestTimeout)
+	_, err := c.ctx.http.callWithHeaders(ctx, http.MethodPost, url, body, contentTypeJSON, headers, defaultRequestTimeout)
 	return err
 }
 
diff --git a/signature.go b/signature.go
index 8beb905..fab58d5 100644
--- a/signature.go
+++ b/signature.go
@@ -19,6 +19,10 @@ const (
 	hmacSignatureHexLen = 30
 	// base62Alphabet is the alphabet (lowercase first) used to encode the truncated HMAC.
 	base62Alphabet = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	// urlSigningSecretExtraKey is the Extra field name the API uses to expose a private
+	// storage's (dataset or key-value store) HMAC signing secret. Consulted by the
+	// dataset/key-value-store public-URL builders to decide whether a URL needs a signature.
+	urlSigningSecretExtraKey = "urlSigningSecretKey"
 )
 
 // createHmacSignature computes an Apify URL-signing signature, byte-for-byte compatible
diff --git a/task.go b/task.go
index 6a958ae..747de65 100644
--- a/task.go
+++ b/task.go
@@ -3,6 +3,7 @@ package apify
 import (
 	"context"
 	"encoding/json"
+	"net/http"
 )
 
 // TaskClient is a client for a specific Actor task.
@@ -46,8 +47,9 @@ func (c *TaskClient) Publish(ctx context.Context) (Task, error) {
 // Update.
 //
 // The public display configuration (PublicConfig) is preserved, so the task can be published
-// again without re-entering it. Requires write permission to both the task and its Actor.
-// Unpublishing a task that is not published does nothing.
+// again without re-entering it. Unlike Publish, Unpublish only requires write permission to
+// the task itself - it succeeds even if the task's Actor is unowned or private. Unpublishing
+// a task that is not published does nothing.
 func (c *TaskClient) Unpublish(ctx context.Context) (Task, error) {
 	return c.Update(ctx, map[string]any{"isPublic": false})
 }
@@ -129,7 +131,7 @@ func (c *TaskClient) UpdateInput(ctx context.Context, input any) (json.RawMessag
 		return nil, err
 	}
 	url := c.ctx.subURL("input")
-	resp, err := c.ctx.http.call(ctx, "PUT", url, data, contentTypeJSON, defaultRequestTimeout)
+	resp, err := c.ctx.http.call(ctx, http.MethodPut, url, data, contentTypeJSON, defaultRequestTimeout)
 	if err != nil {
 		return nil, err
 	}
diff --git a/user.go b/user.go
index fdd6c17..88c0fcf 100644
--- a/user.go
+++ b/user.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"net/http"
 )
 
 // UserClient is a client for accessing user data (/v2/users/{userId} or /v2/users/me).
@@ -61,6 +62,6 @@ func (c *UserClient) UpdateLimits(ctx context.Context, newLimits any) error {
 		return err
 	}
 	url := c.ctx.subURL("limits")
-	_, err = c.ctx.http.call(ctx, "PUT", url, data, contentTypeJSON, defaultRequestTimeout)
+	_, err = c.ctx.http.call(ctx, http.MethodPut, url, data, contentTypeJSON, defaultRequestTimeout)
 	return err
 }
diff --git a/version.go b/version.go
index c5653f4..1e88da2 100644
--- a/version.go
+++ b/version.go
@@ -4,7 +4,7 @@ package apify
 //
 // It follows Semantic Versioning (https://semver.org/). Changes to the public
 // interface (other than additive ones) are considered breaking changes.
-const ClientVersion = "0.8.0"
+const ClientVersion = "0.8.1"
 
 // APISpecVersion is the version of the Apify OpenAPI specification that this
 // client was generated and verified against.