diff --git a/src/crawlee/crawlers/_playwright/_playwright_http_client.py b/src/crawlee/crawlers/_playwright/_playwright_http_client.py
index e522b6d63a..83cdf843ef 100644
--- a/src/crawlee/crawlers/_playwright/_playwright_http_client.py
+++ b/src/crawlee/crawlers/_playwright/_playwright_http_client.py
@@ -7,6 +7,7 @@
 from typing_extensions import override
 
 from crawlee._types import HttpHeaders
+from crawlee._utils.urls import validate_http_url
 from crawlee.crawlers._playwright._types import PlaywrightHttpResponse
 from crawlee.http_clients import HttpClient, HttpCrawlingResult, HttpResponse
 
@@ -79,6 +80,8 @@ async def send_request(
         # TODO: Use `session` to restore all the fingerprint headers according to the `BrowserContext`, after resolved
         # https://github.com/apify/crawlee-python/issues/1055
 
+        validate_http_url(url)
+
         if isinstance(headers, dict) or headers is None:
             headers = HttpHeaders(headers or {})
 
diff --git a/src/crawlee/http_clients/_curl_impersonate.py b/src/crawlee/http_clients/_curl_impersonate.py
index b22a807de3..a2a3e691d7 100644
--- a/src/crawlee/http_clients/_curl_impersonate.py
+++ b/src/crawlee/http_clients/_curl_impersonate.py
@@ -19,6 +19,7 @@
 from crawlee._types import HttpHeaders, HttpMethod, HttpPayload
 from crawlee._utils.blocked import ROTATE_PROXY_ERRORS
 from crawlee._utils.docs import docs_group
+from crawlee._utils.urls import validate_http_url
 from crawlee.errors import ProxyError
 from crawlee.http_clients import HttpClient, HttpCrawlingResult, HttpResponse
 
@@ -197,6 +198,8 @@ async def send_request(
         proxy_info: ProxyInfo | None = None,
         timeout: timedelta | None = None,
     ) -> HttpResponse:
+        validate_http_url(url)
+
         if isinstance(headers, dict) or headers is None:
             headers = HttpHeaders(headers or {})
 
@@ -238,6 +241,8 @@ async def stream(
         proxy_info: ProxyInfo | None = None,
         timeout: timedelta | None = None,
     ) -> AsyncGenerator[HttpResponse]:
+        validate_http_url(url)
+
         if isinstance(headers, dict) or headers is None:
             headers = HttpHeaders(headers or {})
 
diff --git a/src/crawlee/http_clients/_httpx.py b/src/crawlee/http_clients/_httpx.py
index a1f79826c0..f2c2565125 100644
--- a/src/crawlee/http_clients/_httpx.py
+++ b/src/crawlee/http_clients/_httpx.py
@@ -11,6 +11,7 @@
 from crawlee._types import HttpHeaders
 from crawlee._utils.blocked import ROTATE_PROXY_ERRORS
 from crawlee._utils.docs import docs_group
+from crawlee._utils.urls import validate_http_url
 from crawlee.errors import ProxyError
 from crawlee.fingerprint_suite import HeaderGenerator
 from crawlee.http_clients import HttpClient, HttpCrawlingResult, HttpResponse
@@ -192,6 +193,8 @@ async def send_request(
         proxy_info: ProxyInfo | None = None,
         timeout: timedelta | None = None,
     ) -> HttpResponse:
+        validate_http_url(url)
+
         client = self._get_client(proxy_info.url if proxy_info else None)
 
         http_request = self._build_request(
@@ -228,6 +231,8 @@ async def stream(
         proxy_info: ProxyInfo | None = None,
         timeout: timedelta | None = None,
     ) -> AsyncGenerator[HttpResponse]:
+        validate_http_url(url)
+
         client = self._get_client(proxy_info.url if proxy_info else None)
 
         http_request = self._build_request(
diff --git a/src/crawlee/http_clients/_impit.py b/src/crawlee/http_clients/_impit.py
index 7ff441d5d3..708a5c363e 100644
--- a/src/crawlee/http_clients/_impit.py
+++ b/src/crawlee/http_clients/_impit.py
@@ -13,6 +13,7 @@
 from crawlee._types import HttpHeaders
 from crawlee._utils.blocked import ROTATE_PROXY_ERRORS
 from crawlee._utils.docs import docs_group
+from crawlee._utils.urls import validate_http_url
 from crawlee.errors import ProxyError
 from crawlee.http_clients import HttpClient, HttpCrawlingResult, HttpResponse
 
@@ -163,6 +164,8 @@ async def send_request(
         proxy_info: ProxyInfo | None = None,
         timeout: timedelta | None = None,
     ) -> HttpResponse:
+        validate_http_url(url)
+
         if isinstance(headers, dict) or headers is None:
             headers = HttpHeaders(headers or {})
 
@@ -198,6 +201,8 @@ async def stream(
         proxy_info: ProxyInfo | None = None,
         timeout: timedelta | None = None,
     ) -> AsyncGenerator[HttpResponse]:
+        validate_http_url(url)
+
         client = self._get_client(proxy_info.url if proxy_info else None, session.cookies.jar if session else None)
 
         try:
diff --git a/tests/unit/_utils/test_urls.py b/tests/unit/_utils/test_urls.py
index bd07cfb09e..659ef09226 100644
--- a/tests/unit/_utils/test_urls.py
+++ b/tests/unit/_utils/test_urls.py
@@ -39,6 +39,19 @@ def test_validate_http_url() -> None:
     valid_url = 'https://example.com'
     assert validate_http_url(valid_url) == valid_url
 
-    invalid_url = 'htp://invalid-url'
+
+@pytest.mark.parametrize(
+    'invalid_url',
+    [
+        'htp://invalid-url',
+        'gopher://127.0.0.1:6379/_PING',
+        'file:///etc/passwd',
+        'dict://127.0.0.1:11211/stat',
+        'ftp://example.com/secret.txt',
+        'javascript:alert(1)',
+        'example.com/path',
+    ],
+)
+def test_validate_http_url_rejects_non_http_scheme(invalid_url: str) -> None:
     with pytest.raises(ValidationError):
         validate_http_url(invalid_url)
diff --git a/tests/unit/http_clients/test_http_clients.py b/tests/unit/http_clients/test_http_clients.py
index bbb13846ec..fb1ea43eca 100644
--- a/tests/unit/http_clients/test_http_clients.py
+++ b/tests/unit/http_clients/test_http_clients.py
@@ -5,6 +5,7 @@
 
 import pytest
 from curl_cffi import CurlHttpVersion
+from pydantic import ValidationError
 
 from crawlee import Request
 from crawlee.errors import ProxyError
@@ -251,3 +252,14 @@ async def test_compressed_chunked_stream(http_client: HttpClient, server_url: UR
             content_body += chunk
 
     assert content_body == HELLO_WORLD * 1000
+
+
+async def test_send_request_rejects_non_http_scheme(http_client: HttpClient) -> None:
+    with pytest.raises(ValidationError):
+        await http_client.send_request('gopher://127.0.0.1:6379/_PING')
+
+
+async def test_stream_rejects_non_http_scheme(http_client: HttpClient) -> None:
+    with pytest.raises(ValidationError):
+        async with http_client.stream('gopher://127.0.0.1:6379/_PING'):
+            pass