diff --git a/units/aiohttp_client.py b/units/aiohttp_client.py
new file mode 100644
index 0000000000..465494c3df
--- /dev/null
+++ b/units/aiohttp_client.py
@@ -0,0 +1,24 @@
+
+from __future__ import annotations
+
+from contextlib import asynccontextmanager
+from typing import TYPE_CHECKING
+
+from aiohttp import ClientSession
+
+if TYPE_CHECKING:
+    from collections.abc import Iterator
+
+
+@asynccontextmanager
+async def ensure_session(
+    session: ClientSession | None
+) -> Iterator[ClientSession]:
+    if session_not_passed := (session is None):
+        session = ClientSession()
+    try:
+        yield session
+    finally:
+        if session_not_passed:
+            await session.close()
+
diff --git a/units/location.py b/units/location.py
index f757fedd92..c71cb5b832 100644
--- a/units/location.py
+++ b/units/location.py
@@ -1,17 +1,21 @@
 
+from __future__ import annotations
+
 import datetime
 import os
+from typing import TYPE_CHECKING
+
+from .aiohttp_client import ensure_session
 
-import aiohttp
+if TYPE_CHECKING:
+    import aiohttp
 
 
 async def get_geocode_data(
     location: str, *, aiohttp_session: aiohttp.ClientSession | None = None
 ) -> dict:
     # TODO: Add reverse option
-    if aiohttp_session_not_passed := (aiohttp_session is None):
-        aiohttp_session = aiohttp.ClientSession()
-    try:
+    async with ensure_session(aiohttp_session) as aiohttp_session:
         async with aiohttp_session.get(
             "https://maps.googleapis.com/maps/api/geocode/json",
             params = {"address": location, "key": os.getenv("GOOGLE_API_KEY")}
@@ -28,9 +32,6 @@ async def get_geocode_data(
             raise RuntimeError(f"Error: {error_message}")
 
         return geocode_data["results"][0]
-    finally:
-        if aiohttp_session_not_passed:
-            await aiohttp_session.close()
 
 
 async def get_timezone_data(
@@ -40,9 +41,7 @@ async def get_timezone_data(
     longitude: float | int | str | None = None,
     aiohttp_session: aiohttp.ClientSession | None = None
 ) -> dict:
-    if aiohttp_session_not_passed := (aiohttp_session is None):
-        aiohttp_session = aiohttp.ClientSession()
-    try:
+    async with ensure_session(aiohttp_session) as aiohttp_session:
         if latitude is None and longitude is None:
             if not location:
                 raise TypeError("location or latitude and longitude required")
@@ -73,9 +72,6 @@ async def get_timezone_data(
             raise RuntimeError(f"Error: {error_message}")
 
         return timezone_data
-    finally:
-        if aiohttp_session_not_passed:
-            await aiohttp_session.close()
 
 
 DEGREES_RANGES_TO_DIRECTIONS = {
diff --git a/units/runescape.py b/units/runescape.py
index 38ad15c52b..bf151c1dfd 100644
--- a/units/runescape.py
+++ b/units/runescape.py
@@ -1,13 +1,18 @@
 
-import aiohttp
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from .aiohttp_client import ensure_session
+
+if TYPE_CHECKING:
+    import aiohttp
 
 
 async def get_item_id(
     item: str, *, aiohttp_session: aiohttp.ClientSession | None = None
 ) -> int:
-    if aiohttp_session_not_passed := (aiohttp_session is None):
-        aiohttp_session = aiohttp.ClientSession()
-    try:
+    async with ensure_session(aiohttp_session) as aiohttp_session:
         # https://runescape.wiki/w/Application_programming_interface#Grand_Exchange_Database_API
         # https://www.mediawiki.org/wiki/API:Opensearch
         # TODO: Handle redirects?
@@ -41,9 +46,6 @@ async def get_item_id(
                 return item_id[0]
 
         raise ValueError(f"{item} is not an item")
-    finally:
-        if aiohttp_session_not_passed:
-            await aiohttp_session.close()
 
 
 async def get_ge_data(
@@ -52,9 +54,7 @@ async def get_ge_data(
     item_id: int | str | None  = None,
     aiohttp_session: aiohttp.ClientSession | None = None
 ) -> dict:
-    if aiohttp_session_not_passed := (aiohttp_session is None):
-        aiohttp_session = aiohttp.ClientSession()
-    try:
+    async with ensure_session(aiohttp_session) as aiohttp_session:
         if item_id is None:
             item_id = await get_item_id(item, aiohttp_session = aiohttp_session)
         async with aiohttp_session.get(
@@ -65,17 +65,12 @@ async def get_ge_data(
                 raise ValueError(f"{item} not found on the Grand Exchange")
             data = await resp.json(content_type = "text/html")
         return data["item"]
-    finally:
-        if aiohttp_session_not_passed:
-            await aiohttp_session.close()
 
 
 async def get_monster_data(
     monster: str, *, aiohttp_session: aiohttp.ClientSession | None = None
 ) -> dict:
-    if aiohttp_session_not_passed := (aiohttp_session is None):
-        aiohttp_session = aiohttp.ClientSession()
-    try:
+    async with ensure_session(aiohttp_session) as aiohttp_session:
         async with aiohttp_session.get(
             "http://services.runescape.com/m=itemdb_rs/bestiary/beastSearch.json",
             params = {"term": monster}
@@ -89,7 +84,4 @@ async def get_monster_data(
         ) as resp:
             data = await resp.json(content_type = "text/html")
         return data
-    finally:
-        if aiohttp_session_not_passed:
-            await aiohttp_session.close()
 
diff --git a/units/wikis.py b/units/wikis.py
index fb1a7be682..7a4fe4c546 100644
--- a/units/wikis.py
+++ b/units/wikis.py
@@ -4,11 +4,13 @@
 import re
 from typing import TYPE_CHECKING
 
-import aiohttp
 from bs4 import BeautifulSoup
 from pydantic import BaseModel
 
+from .aiohttp_client import ensure_session
+
 if TYPE_CHECKING:
+    import aiohttp
     from collections.abc import Iterable
 
 
@@ -34,9 +36,7 @@ async def search_wiki(
 ) -> WikiArticle:
     # TODO: Add User-Agent
     # TODO: Use textwrap
-    if aiohttp_session_not_passed := (aiohttp_session is None):
-        aiohttp_session = aiohttp.ClientSession()
-    try:
+    async with ensure_session(aiohttp_session) as aiohttp_session:
         if random:
             if not isinstance(random_namespaces, int | str):
                 random_namespaces = '|'.join(
@@ -153,7 +153,4 @@ async def search_wiki(
                 ) if thumbnail else None
             )
         )
-    finally:
-        if aiohttp_session_not_passed:
-            await aiohttp_session.close()