diff --git a/src/node/api/http.py b/src/node/api/http.py
index b144dda..cabd3c9 100644
--- a/src/node/api/http.py
+++ b/src/node/api/http.py
@@ -77,8 +77,13 @@ class HttpNodeApi(NodeApi):
         return InfoSerializer.model_validate(response.json())
 
     async def get_block_by_hash(self, block_hash: str) -> Optional[BlockSerializer]:
-        url = urljoin(self.base_url, f"{self.ENDPOINT_BLOCK_BY_HASH}/{block_hash}")
-        response = requests.get(url, auth=self.authentication, timeout=60)
+        url = urljoin(self.base_url, self.ENDPOINT_BLOCK_BY_HASH)
+        response = requests.post(
+            url,
+            auth=self.authentication,
+            timeout=60,
+            json=block_hash,
+        )
         if response.status_code == 404:
             return None
         response.raise_for_status()
@@ -88,7 +93,7 @@ class HttpNodeApi(NodeApi):
             return None
         block = BlockSerializer.model_validate(json_data)
         # The storage endpoint doesn't include the block hash in the response,
-        # so we set it from the URL parameter
+        # so we set it from the request body
         if not block.header.hash:
             block.header.hash = bytes.fromhex(block_hash)
         return block
diff --git a/third_party/requests.py b/third_party/requests.py
index 3b2a5ad..8e9d7e6 100644
--- a/third_party/requests.py
+++ b/third_party/requests.py
@@ -9,3 +9,10 @@ def get(url, params=None, auth: Option[Authentication] = None, **kwargs):
     if auth.is_some:
         headers["Authorization"] = auth.unwrap().for_requests()
     return requests.get(url, params, headers=headers, **kwargs)
+
+
+def post(url, data=None, json=None, auth: Option[Authentication] = None, **kwargs):
+    headers = kwargs.get("headers", {})
+    if auth.is_some:
+        headers["Authorization"] = auth.unwrap().for_requests()
+    return requests.post(url, data=data, json=json, headers=headers, **kwargs)