diff --git a/glean_parser/util.py b/glean_parser/util.py
index 4f35b615..4703df8c 100644
--- a/glean_parser/util.py
+++ b/glean_parser/util.py
@@ -16,11 +16,9 @@
 from typing import Any, Callable, Iterable, Sequence, Tuple, Union, Optional
 import urllib.request
 
-import diskcache  # type: ignore
 import jinja2
 import jsonschema  # type: ignore
 from jsonschema import _utils  # type: ignore
-import platformdirs  # type: ignore
 import yaml
 
 try:
@@ -283,33 +281,18 @@ def resolve_remote(self, uri):
     return NullResolver.from_schema(schema)
 
 
-def fetch_remote_url(url: str, cache: bool = True):
+def fetch_remote_url(url: str):
     """
-    Fetches the contents from an HTTP url or local file path, and optionally
-    caches it to disk.
+    Fetches the contents from an HTTP url or local file path.
     """
-    # Include the Python version in the cache key, since caches aren't
-    # sharable across Python versions.
-    key = (url, str(sys.version_info))
-
     is_http = url.startswith("http")
 
     if not is_http:
         with open(url, "r", encoding="utf-8") as fd:
             return fd.read()
 
-    if cache:
-        cache_dir = platformdirs.user_cache_dir("glean_parser", "mozilla")
-        with diskcache.Cache(cache_dir, disk=diskcache.JSONDisk) as dc:
-            if key in dc:
-                return dc[key]
-
     contents = urllib.request.urlopen(url).read().decode("utf-8")
 
-    if cache:
-        with diskcache.Cache(cache_dir, disk=diskcache.JSONDisk) as dc:
-            dc[key] = contents
-
     return contents
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 84d4fbce..8fda031d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,6 @@ classifiers = [
 requires-python = ">=3.9"
 dependencies = [
     "Click>=7",
-    "diskcache>=4",
     "Jinja2>=2.10.1",
     "jsonschema>=3.0.2",
     "platformdirs>=2.4.0",
diff --git a/uv.lock b/uv.lock
index 8d861b34..7457cab0 100644
--- a/uv.lock
+++ b/uv.lock
@@ -256,15 +256,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/3c/38/bbe2e63902847cf79036ecc75550d0698af31c91c7575352eb25190d0fb3/coverage-7.9.2-py3-none-any.whl", hash = "sha256:e425cd5b00f6fc0ed7cdbd766c70be8baab4b7839e4d4fe5fac48581dd968ea4", size = 204005, upload-time = "2025-07-03T10:54:13.491Z" },
 ]
 
-[[package]]
-name = "diskcache"
-version = "5.6.3"
-source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/3f/21/1c1ffc1a039ddcc459db43cc108658f32c57d271d7289a2794e401d0fdb6/diskcache-5.6.3.tar.gz", hash = "sha256:2c3a3fa2743d8535d832ec61c2054a1641f41775aa7c556758a109941e33e4fc", size = 67916, upload-time = "2023-08-31T06:12:00.316Z" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/3f/27/4570e78fc0bf5ea0ca45eb1de3818a23787af9b390c0b0a0033a1b8236f9/diskcache-5.6.3-py3-none-any.whl", hash = "sha256:5e31b2d5fbad117cc363ebaf6b689474db18a1f6438bc82358b024abd4c2ca19", size = 45550, upload-time = "2023-08-31T06:11:58.822Z" },
-]
-
 [[package]]
 name = "docutils"
 version = "0.21.2"
@@ -292,7 +283,6 @@ source = { editable = "." }
 dependencies = [
     { name = "click", version = "8.1.8", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version < '3.10'" },
     { name = "click", version = "8.2.1", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version >= '3.10'" },
-    { name = "diskcache" },
     { name = "jinja2" },
     { name = "jsonschema" },
     { name = "platformdirs" },
@@ -317,7 +307,6 @@ dev = [
 [package.metadata]
 requires-dist = [
     { name = "click", specifier = ">=7" },
-    { name = "diskcache", specifier = ">=4" },
     { name = "jinja2", specifier = ">=2.10.1" },
     { name = "jsonschema", specifier = ">=3.0.2" },
     { name = "platformdirs", specifier = ">=2.4.0" },