diff --git a/docs/HISTORY.md b/docs/HISTORY.md
index 35dc5eae5..354d4f8d6 100644
--- a/docs/HISTORY.md
+++ b/docs/HISTORY.md
@@ -24,6 +24,7 @@
 
 - Remove outdated references to `app_init_delay`
 - Reworked how the `pin_app` and `pin_thread` settings work their way through the internals, and added corresponding tests.
+- Removed the unused `deepdiff` dependency (declared but never imported by AppDaemon).
 
 **Breaking Changes**
 
diff --git a/pyproject.toml b/pyproject.toml
index fb897c179..9baac9d9e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,6 @@ dependencies = [
     "aiohttp_jinja2>=1.5.1",
     "astral>=3.2",
     "bcrypt>=4.0.1",
-    "deepdiff>=8.2.0",
     "feedparser>=6.0.10",
     "paho-mqtt>=1.6.1,<3",
     "pid>=3.0.4",
diff --git a/uv.lock b/uv.lock
index 738a22a9a..f3542726e 100644
--- a/uv.lock
+++ b/uv.lock
@@ -204,7 +204,6 @@ dependencies = [
     { name = "aiohttp-jinja2" },
     { name = "astral" },
     { name = "bcrypt" },
-    { name = "deepdiff" },
     { name = "feedparser" },
     { name = "paho-mqtt" },
     { name = "pid" },
@@ -254,7 +253,6 @@ requires-dist = [
     { name = "aiohttp-jinja2", specifier = ">=1.5.1" },
     { name = "astral", specifier = ">=3.2" },
     { name = "bcrypt", specifier = ">=4.0.1" },
-    { name = "deepdiff", specifier = ">=8.2.0" },
     { name = "feedparser", specifier = ">=6.0.10" },
     { name = "paho-mqtt", specifier = ">=1.6.1,<3" },
     { name = "pid", specifier = ">=3.0.4" },
@@ -817,18 +815,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/4e/8c/f3147f5c4b73e7550fe5f9352eaa956ae838d5c51eb58e7a25b9f3e2643b/decorator-5.2.1-py3-none-any.whl", hash = "sha256:d316bb415a2d9e2d2b3abcc4084c6502fc09240e292cd76a76afc106a1c8e04a", size = 9190 },
 ]
 
-[[package]]
-name = "deepdiff"
-version = "9.0.0"
-source = { registry = "https://pypi.org/simple" }
-dependencies = [
-    { name = "orderly-set" },
-]
-sdist = { url = "https://files.pythonhosted.org/packages/24/20/63dd34163ed07393968128dc8c7ab948c96e47c4ce76976ea533de64909d/deepdiff-9.0.0.tar.gz", hash = "sha256:4872005306237b5b50829803feff58a1dfd20b2b357a55de22e7ded65b2008a7", size = 151952 }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/dc/c4/da7089cd7aa4ab554f56e18a7fb08dcfed8fd2ae91fa528f5b1be207a148/deepdiff-9.0.0-py3-none-any.whl", hash = "sha256:b1ae0dd86290d86a03de5fbee728fde43095c1472ae4974bdab23ab4656305bd", size = 170540 },
-]
-
 [[package]]
 name = "defusedxml"
 version = "0.7.1"
@@ -1955,15 +1941,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/f9/33/bd5b9137445ea4b680023eb0469b2bb969d61303dedb2aac6560ff3d14a1/notebook_shim-0.2.4-py3-none-any.whl", hash = "sha256:411a5be4e9dc882a074ccbcae671eda64cceb068767e9a3419096986560e1cef", size = 13307 },
 ]
 
-[[package]]
-name = "orderly-set"
-version = "5.5.0"
-source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/4a/88/39c83c35d5e97cc203e9e77a4f93bf87ec89cf6a22ac4818fdcc65d66584/orderly_set-5.5.0.tar.gz", hash = "sha256:e87185c8e4d8afa64e7f8160ee2c542a475b738bc891dc3f58102e654125e6ce", size = 27414 }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/12/27/fb8d7338b4d551900fa3e580acbe7a0cf655d940e164cb5c00ec31961094/orderly_set-5.5.0-py3-none-any.whl", hash = "sha256:46f0b801948e98f427b412fcabb831677194c05c3b699b80de260374baa0b1e7", size = 13068 },
-]
-
 [[package]]
 name = "overrides"
 version = "7.7.0"