diff --git a/src/Command/AbstractPhraseKeyCommand.php b/src/Command/AbstractPhraseKeyCommand.php
index 1fdf340..7f91823 100644
--- a/src/Command/AbstractPhraseKeyCommand.php
+++ b/src/Command/AbstractPhraseKeyCommand.php
@@ -77,7 +77,7 @@ private function list(OutputInterface $output, ?string $key, array $tags): int
         try {
             $result = $this->tagService->list($key, $tags);
         } catch (ProviderException $e) {
-            $output->writeln(sprintf('<error>%s</error>', $e->getMessage()));
+            $output->writeln(\sprintf('<error>%s</error>', $e->getMessage()));
 
             return Command::FAILURE;
         }
@@ -91,7 +91,7 @@ private function list(OutputInterface $output, ?string $key, array $tags): int
         $output->writeln('<info>your query would match the following keys (sample):</info>');
 
         foreach ($result as $item) {
-            $output->writeln(sprintf('<comment>></comment> <info>%s</info>', $item));
+            $output->writeln(\sprintf('<comment>></comment> <info>%s</info>', $item));
         }
 
         return Command::SUCCESS;
diff --git a/src/Command/PhraseKeyTagCommand.php b/src/Command/PhraseKeyTagCommand.php
index 43cd83a..76f611c 100644
--- a/src/Command/PhraseKeyTagCommand.php
+++ b/src/Command/PhraseKeyTagCommand.php
@@ -46,12 +46,12 @@ protected function executeCommand(InputInterface $input, OutputInterface $output
         try {
             $keys = $this->tagService->tag($queryKey, $queryTag, $tag);
         } catch (ProviderException $e) {
-            $output->writeln(sprintf('<error>%s</error>', $e->getMessage()));
+            $output->writeln(\sprintf('<error>%s</error>', $e->getMessage()));
 
             return Command::FAILURE;
         }
 
-        $output->writeln(sprintf('<info>successfully tagged %d keys with "%s"</info>', $keys, implode(', ', $tag)));
+        $output->writeln(sprintf('<info>successfully tagged %d keys with "%s"</info>', $keys, \implode(', ', $tag)));
 
         return Command::SUCCESS;
     }
diff --git a/src/Command/PhraseKeyUntagCommand.php b/src/Command/PhraseKeyUntagCommand.php
index 0505087..4a98b1e 100644
--- a/src/Command/PhraseKeyUntagCommand.php
+++ b/src/Command/PhraseKeyUntagCommand.php
@@ -51,7 +51,7 @@ protected function executeCommand(InputInterface $input, OutputInterface $output
             return Command::FAILURE;
         }
 
-        $output->writeln(sprintf('<info>successfully untagged %d keys with "%s"</info>', $keys, implode(', ', $tag)));
+        $output->writeln(\sprintf('<info>successfully untagged %d keys with "%s"</info>', $keys, \implode(', ', $tag)));
 
         return Command::SUCCESS;
     }
diff --git a/src/Service/PhraseTagService.php b/src/Service/PhraseTagService.php
index df1ffd7..bf40fd2 100644
--- a/src/Service/PhraseTagService.php
+++ b/src/Service/PhraseTagService.php
@@ -43,13 +43,13 @@ public function list(?string $key, array $tags): array
         ]);
 
         if (200 !== $statusCode = $response->getStatusCode()) {
-            throw new ProviderException(sprintf('phrase replied with an error (%d): "%s"', $statusCode, $response->getContent(false)), $response);
+            throw new ProviderException(\sprintf('phrase replied with an error (%d): "%s"', $statusCode, $response->getContent(false)), $response);
         }
 
         /** @var array{name: string} $arr */
         $arr = $response->toArray();
 
-        return array_column($arr, 'name');
+        return \array_column($arr, 'name');
     }
 
     /**
@@ -66,19 +66,19 @@ public function tag(?string $key, array $tags, array $addTags): int
             ],
             'body' => [
                 'q' => $query,
-                'tags' => implode(',', $addTags),
+                'tags' => \implode(',', $addTags),
             ],
         ]);
 
         if (200 !== $statusCode = $response->getStatusCode()) {
-            throw new ProviderException(sprintf('phrase replied with an error (%d): "%s"', $statusCode, $response->getContent(false)), $response);
+            throw new ProviderException(\sprintf('phrase replied with an error (%d): "%s"', $statusCode, $response->getContent(false)), $response);
         }
 
         /** @var array{records_affected: string} $arr */
         $arr = $response->toArray();
         $records = $arr['records_affected'];
 
-        $this->logger->info(sprintf('tagged %d keys matching "%s" with tag(s) "%s"', $records, $query, implode(', ', $addTags)));
+        $this->logger->info(\sprintf('tagged %d keys matching "%s" with tag(s) "%s"', $records, $query, \implode(', ', $addTags)));
 
         return (int) $records;
     }
@@ -97,19 +97,19 @@ public function untag(?string $key, array $tags, array $removeTags): int
             ],
             'body' => [
                 'q' => $query,
-                'tags' => implode(',', $removeTags),
+                'tags' => \implode(',', $removeTags),
             ],
         ]);
 
         if (200 !== $statusCode = $response->getStatusCode()) {
-            throw new ProviderException(sprintf('phrase replied with an error (%d): "%s"', $statusCode, $response->getContent(false)), $response);
+            throw new ProviderException(\sprintf('phrase replied with an error (%d): "%s"', $statusCode, $response->getContent(false)), $response);
         }
 
         /** @var array{records_affected: string} $arr */
         $arr = $response->toArray();
         $records = $arr['records_affected'];
 
-        $this->logger->info(sprintf('untagged %d keys matching "%s" with tag(s) "%s"', $records, $query, implode(', ', $removeTags)));
+        $this->logger->info(\sprintf('untagged %d keys matching "%s" with tag(s) "%s"', $records, $query, \implode(', ', $removeTags)));
 
         return (int) $records;
     }
@@ -120,8 +120,8 @@ public function untag(?string $key, array $tags, array $removeTags): int
     private function createQuery(?string $key, array $tags): string
     {
         $query = $key ?? '';
-        $query .= [] !== $tags ? ' tags:'.implode(',', $tags) : '';
+        $query .= [] !== $tags ? ' tags:'.\implode(',', $tags) : '';
 
-        return trim($query);
+        return \trim($query);
     }
 }
diff --git a/tests/Unit/Service/PhraseTagServiceTest.php b/tests/Unit/Service/PhraseTagServiceTest.php
index a2b58be..a0a4e30 100644
--- a/tests/Unit/Service/PhraseTagServiceTest.php
+++ b/tests/Unit/Service/PhraseTagServiceTest.php
@@ -103,16 +103,16 @@ public function testTag(?string $key, array $tags, array $newTags): void
         $this->getLogger()
             ->expects(self::once())
             ->method('info')
-                ->with(sprintf('tagged 10 keys matching "%s" with tag(s) "%s"', $this->query($key, $tags), implode(', ', $newTags)));
+                ->with(\sprintf('tagged 10 keys matching "%s" with tag(s) "%s"', $this->query($key, $tags), \implode(', ', $newTags)));
 
         $responses = [
             'tag keys' => function (string $method, string $url, array $options = []) use ($key, $tags, $newTags): ResponseInterface {
-                $body = ['q' => $this->query($key, $tags), 'tags' => implode(',', $newTags)];
+                $body = ['q' => $this->query($key, $tags), 'tags' => \implode(',', $newTags)];
                 $this->assertSame('PATCH', $method);
                 $this->assertSame('https://api.phrase.com/api/v2/projects/1/keys/tag?page=1&per_page=100', $url);
-                $this->assertSame(http_build_query($body), $options['body']);
+                $this->assertSame(\http_build_query($body), $options['body']);
 
-                return new MockResponse(json_encode(['records_affected' => '10'], \JSON_THROW_ON_ERROR));
+                return new MockResponse(\json_encode(['records_affected' => '10'], \JSON_THROW_ON_ERROR));
             },
         ];
 
@@ -158,16 +158,16 @@ public function testUnTag(?string $key, array $tags, array $newTags): void
         $this->getLogger()
             ->expects(self::once())
             ->method('info')
-            ->with(sprintf('untagged 10 keys matching "%s" with tag(s) "%s"', $this->query($key, $tags), implode(', ', $newTags)));
+            ->with(\sprintf('untagged 10 keys matching "%s" with tag(s) "%s"', $this->query($key, $tags), \implode(', ', $newTags)));
 
         $responses = [
             'untag keys' => function (string $method, string $url, array $options = []) use ($key, $tags, $newTags): ResponseInterface {
-                $body = ['q' => $this->query($key, $tags), 'tags' => implode(',', $newTags)];
+                $body = ['q' => $this->query($key, $tags), 'tags' => \implode(',', $newTags)];
                 $this->assertSame('PATCH', $method);
                 $this->assertSame('https://api.phrase.com/api/v2/projects/1/keys/untag?page=1&per_page=100', $url);
-                $this->assertSame(http_build_query($body), $options['body']);
+                $this->assertSame(\http_build_query($body), $options['body']);
 
-                return new MockResponse(json_encode(['records_affected' => '10'], \JSON_THROW_ON_ERROR));
+                return new MockResponse(\json_encode(['records_affected' => '10'], \JSON_THROW_ON_ERROR));
             },
         ];
 
@@ -294,8 +294,8 @@ private function getLogger(): LoggerInterface&MockObject
     private function query(?string $key, array $tags): string
     {
         $query = $key ?? '';
-        $query .= [] !== $tags ? ' tags:'.implode(',', $tags) : '';
+        $query .= [] !== $tags ? ' tags:'.\implode(',', $tags) : '';
 
-        return trim($query);
+        return \trim($query);
     }
 }