diff --git a/src/Providers/Gemini/Handlers/Stream.php b/src/Providers/Gemini/Handlers/Stream.php
index e7acfad33..45105243b 100644
--- a/src/Providers/Gemini/Handlers/Stream.php
+++ b/src/Providers/Gemini/Handlers/Stream.php
@@ -14,7 +14,7 @@
 use Prism\Prism\Exceptions\PrismStreamDecodeException;
 use Prism\Prism\Providers\Gemini\Maps\FinishReasonMap;
 use Prism\Prism\Providers\Gemini\Maps\MessageMap;
-use Prism\Prism\Providers\Gemini\Maps\ToolChoiceMap;
+use Prism\Prism\Providers\Gemini\Maps\ToolConfigMap;
 use Prism\Prism\Providers\Gemini\Maps\ToolMap;
 use Prism\Prism\Streaming\EventID;
 use Prism\Prism\Streaming\Events\StepFinishEvent;
@@ -447,13 +447,8 @@ protected function sendRequest(Request $request): Response
     {
         $providerOptions = $request->providerOptions();
 
-        if ($request->tools() !== [] && $request->providerTools() !== []) {
-            throw new PrismException('Use of provider tools with custom tools is not currently supported by Gemini.');
-        }
-
-        if ($request->tools() !== [] && ($providerOptions['searchGrounding'] ?? false)) {
-            throw new PrismException('Use of search grounding with custom tools is not currently supported by Prism.');
-        }
+        $hasSearchGrounding = (bool) ($providerOptions['searchGrounding'] ?? false);
+        $hasBothToolTypes = $request->tools() !== [] && ($request->providerTools() !== [] || $hasSearchGrounding);
 
         $tools = [];
 
@@ -464,14 +459,16 @@ protected function sendRequest(Request $request): Response
                 ],
                 $request->providerTools()
             );
-        } elseif ($providerOptions['searchGrounding'] ?? false) {
+        } elseif ($hasSearchGrounding) {
             $tools = [
                 [
                     'google_search' => (object) [],
                 ],
             ];
-        } elseif ($request->tools() !== []) {
-            $tools = ['function_declarations' => ToolMap::map($request->tools())];
+        }
+
+        if ($request->tools() !== []) {
+            $tools['function_declarations'] = ToolMap::map($request->tools());
         }
 
         $thinkingConfig = $providerOptions['thinkingConfig'] ?? null;
@@ -490,6 +487,8 @@ protected function sendRequest(Request $request): Response
             ];
         }
 
+        $toolConfig = ToolConfigMap::map($request->toolChoice(), $hasBothToolTypes);
+
         /** @var Response $response */
         $response = $this->client
             ->withOptions(['stream' => true])
@@ -505,7 +504,7 @@ protected function sendRequest(Request $request): Response
                         'thinkingConfig' => $thinkingConfig,
                     ]) ?: null,
                     'tools' => $tools !== [] ? $tools : null,
-                    'tool_config' => $request->toolChoice() ? ToolChoiceMap::map($request->toolChoice()) : null,
+                    'tool_config' => $toolConfig,
                     'safetySettings' => $providerOptions['safetySettings'] ?? null,
                 ])
             );
diff --git a/src/Providers/Gemini/Handlers/Structured.php b/src/Providers/Gemini/Handlers/Structured.php
index 6d4870f59..cc279c387 100644
--- a/src/Providers/Gemini/Handlers/Structured.php
+++ b/src/Providers/Gemini/Handlers/Structured.php
@@ -18,7 +18,7 @@
 use Prism\Prism\Providers\Gemini\Maps\MessageMap;
 use Prism\Prism\Providers\Gemini\Maps\SchemaMap;
 use Prism\Prism\Providers\Gemini\Maps\ToolCallMap;
-use Prism\Prism\Providers\Gemini\Maps\ToolChoiceMap;
+use Prism\Prism\Providers\Gemini\Maps\ToolConfigMap;
 use Prism\Prism\Providers\Gemini\Maps\ToolMap;
 use Prism\Prism\Structured\Request;
 use Prism\Prism\Structured\Response as StructuredResponse;
@@ -79,9 +79,7 @@ public function sendRequest(Request $request): array
     {
         $providerOptions = $request->providerOptions();
 
-        if ($request->tools() !== [] && $request->providerTools() !== []) {
-            throw new PrismException('Use of provider tools with custom tools is not currently supported by Gemini.');
-        }
+        $hasBothToolTypes = $request->tools() !== [] && $request->providerTools() !== [];
 
         $tools = [];
 
@@ -97,10 +95,8 @@ public function sendRequest(Request $request): array
         }
 
         if ($request->tools() !== []) {
-            $tools = [
-                [
-                    'function_declarations' => ToolMap::map($request->tools()),
-                ],
+            $tools[] = [
+                'function_declarations' => ToolMap::map($request->tools()),
             ];
         }
 
@@ -120,6 +116,8 @@ public function sendRequest(Request $request): array
             ]);
         }
 
+        $toolConfig = ToolConfigMap::map($request->toolChoice(), $hasBothToolTypes);
+
         /** @var Response $response */
         $response = $this->client->post(
             "{$request->model()}:generateContent",
@@ -135,7 +133,7 @@ public function sendRequest(Request $request): array
                     'thinkingConfig' => $thinkingConfig,
                 ]),
                 'tools' => $tools !== [] ? $tools : null,
-                'tool_config' => $request->toolChoice() ? ToolChoiceMap::map($request->toolChoice()) : null,
+                'tool_config' => $toolConfig,
                 'safetySettings' => $providerOptions['safetySettings'] ?? null,
             ])
         );
diff --git a/src/Providers/Gemini/Handlers/Text.php b/src/Providers/Gemini/Handlers/Text.php
index fce051b67..c892091f6 100644
--- a/src/Providers/Gemini/Handlers/Text.php
+++ b/src/Providers/Gemini/Handlers/Text.php
@@ -15,7 +15,7 @@
 use Prism\Prism\Providers\Gemini\Maps\FinishReasonMap;
 use Prism\Prism\Providers\Gemini\Maps\MessageMap;
 use Prism\Prism\Providers\Gemini\Maps\ToolCallMap;
-use Prism\Prism\Providers\Gemini\Maps\ToolChoiceMap;
+use Prism\Prism\Providers\Gemini\Maps\ToolConfigMap;
 use Prism\Prism\Providers\Gemini\Maps\ToolMap;
 use Prism\Prism\Text\Request;
 use Prism\Prism\Text\Response as TextResponse;
@@ -90,9 +90,7 @@ protected function sendRequest(Request $request): ClientResponse
             'thinkingConfig' => $thinkingConfig,
         ]);
 
-        if ($request->tools() !== [] && $request->providerTools() != []) {
-            throw new PrismException('Use of provider tools with custom tools is not currently supported by Gemini.');
-        }
+        $hasBothToolTypes = $request->tools() !== [] && $request->providerTools() !== [];
 
         $tools = [];
 
@@ -109,6 +107,8 @@ protected function sendRequest(Request $request): ClientResponse
             $tools['function_declarations'] = ToolMap::map($request->tools());
         }
 
+        $toolConfig = ToolConfigMap::map($request->toolChoice(), $hasBothToolTypes);
+
         /** @var ClientResponse $response */
         $response = $this->client->post(
             "{$request->model()}:generateContent",
@@ -117,7 +117,7 @@ protected function sendRequest(Request $request): ClientResponse
                 'cachedContent' => $providerOptions['cachedContentName'] ?? null,
                 'generationConfig' => $generationConfig !== [] ? $generationConfig : null,
                 'tools' => $tools !== [] ? $tools : null,
-                'tool_config' => $request->toolChoice() ? ToolChoiceMap::map($request->toolChoice()) : null,
+                'tool_config' => $toolConfig,
                 'safetySettings' => $providerOptions['safetySettings'] ?? null,
             ])
         );
diff --git a/src/Providers/Gemini/Maps/ToolConfigMap.php b/src/Providers/Gemini/Maps/ToolConfigMap.php
new file mode 100644
index 000000000..5519b10cc
--- /dev/null
+++ b/src/Providers/Gemini/Maps/ToolConfigMap.php
@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Prism\Prism\Providers\Gemini\Maps;
+
+use Prism\Prism\Enums\ToolChoice;
+
+class ToolConfigMap
+{
+    /**
+     * @return array<string, mixed>|null
+     */
+    public static function map(string|ToolChoice|null $toolChoice, bool $includeServerSideToolInvocations = false): ?array
+    {
+        $config = ToolChoiceMap::map($toolChoice);
+
+        /** @var array<string, mixed>|null $config */
+        $config = is_array($config) ? $config : null;
+
+        if ($includeServerSideToolInvocations) {
+            return array_merge($config ?? [], ['includeServerSideToolInvocations' => true]);
+        }
+
+        return $config;
+    }
+}
diff --git a/tests/Providers/Gemini/GeminiTextTest.php b/tests/Providers/Gemini/GeminiTextTest.php
index 354d86cb8..d7f155c9d 100644
--- a/tests/Providers/Gemini/GeminiTextTest.php
+++ b/tests/Providers/Gemini/GeminiTextTest.php
@@ -9,7 +9,6 @@
 use Prism\Prism\Enums\Citations\CitationSourceType;
 use Prism\Prism\Enums\FinishReason;
 use Prism\Prism\Enums\Provider;
-use Prism\Prism\Exceptions\PrismException;
 use Prism\Prism\Facades\Prism;
 use Prism\Prism\Schema\ArraySchema;
 use Prism\Prism\Schema\BooleanSchema;
@@ -405,7 +404,7 @@ function (Request $request): bool {
         });
     });
 
-    it('throws an exception if provider tools are enabled with other tools', function (): void {
+    it('sends includeServerSideToolInvocations when provider tools and custom tools are both present', function (): void {
         FixtureResponse::fakeResponseSequence('*', 'gemini/generate-text-with-search-grounding');
 
         $tools = [
@@ -417,13 +416,19 @@ function (Request $request): bool {
         ];
 
         Prism::text()
-            ->using(Provider::Gemini, 'gemini-2.0-flash')
-            ->withMaxSteps(3)
+            ->using(Provider::Gemini, 'gemini-3.1-pro-preview')
+            ->withMaxSteps(1)
             ->withTools($tools)
             ->withProviderTools([new ProviderTool('google_search')])
             ->withPrompt('What sport fixtures are on today, and will I need a coat based on today\'s weather forecast?')
             ->asText();
-    })->throws(PrismException::class, 'Use of provider tools with custom tools is not currently supported by Gemini.');
+
+        Http::assertSent(function (Request $request): bool {
+            $data = $request->data();
+
+            return ($data['tool_config']['includeServerSideToolInvocations'] ?? false) === true;
+        });
+    });
 
     it('adds file_search provider tool with options to the request', function (): void {
         FixtureResponse::fakeResponseSequence('*', 'gemini/generate-text-with-file-search');