diff --git a/CHANGELOG.md b/CHANGELOG.md
index 41bd527b..81803f20 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 All notable changes to Phive are documented in this file using the [Keep a CHANGELOG](http://keepachangelog.com/) principles.
 
+## [Unreleased]
+
+### Added
+* Added `--trust-gpg-keys` option to the `update` command to silently import GPG keys when required
+
 ## [0.16.0] - 2025-04-10
 
 __Please note__: Version 0.16.x requires PHP 8.0 or later.
diff --git a/src/commands/help/help.md b/src/commands/help/help.md
index 0748fc43..bc6783e8 100644
--- a/src/commands/help/help.md
+++ b/src/commands/help/help.md
@@ -67,13 +67,15 @@
     
     _-s, --status_   Show the status of all migrations
 
-**update [--prefer-offline] [<alias1> <alias2> ...]**
+**update [--prefer-offline] [--trust-gpg-keys] [<alias1> <alias2> ...]**
     Update PHARs configured in the project's phive.xml to the newest applicable version.
 
-    _--prefer-offline_    Try to use local PHARs first, only connect to remote repositories
-                        if no local PHAR satisfies the given version constraint.
+    _--prefer-offline_         Try to use local PHARs first, only connect to remote repositories
+                             if no local PHAR satisfies the given version constraint.
+    _--trust-gpg-keys_         Silently import these keys when required (40-digit fingerprint
+                             or 16-digit long key ID, optionally with the `0x` prefix, separated by comma)
 
-    _alias_               If one or more aliases are provided, only those will be updated
+    _alias_                    If one or more aliases are provided, only those will be updated
 
 **update-repository-list**
     Update the alias list of known PHAR distributed applications and libraries
diff --git a/src/commands/update/UpdateContext.php b/src/commands/update/UpdateContext.php
index b44178a9..6fa5a94d 100644
--- a/src/commands/update/UpdateContext.php
+++ b/src/commands/update/UpdateContext.php
@@ -10,13 +10,19 @@
  */
 namespace PharIo\Phive;
 
+use function in_array;
 use PharIo\Phive\Cli\GeneralContext;
 
 class UpdateContext extends GeneralContext {
+    public function requiresValue(string $option): bool {
+        return in_array($option, ['trust-gpg-keys'], true);
+    }
+
     protected function getKnownOptions(): array {
         return [
             'force-accept-unsigned' => false,
             'prefer-offline'        => false,
+            'trust-gpg-keys'        => false,
             'global'                => 'g'
         ];
     }