diff --git a/invokeai/version/invokeai_version.py b/invokeai/version/invokeai_version.py
index e3e28dc8072..5194ece743d 100644
--- a/invokeai/version/invokeai_version.py
+++ b/invokeai/version/invokeai_version.py
@@ -1 +1 @@
-__version__ = "6.8.0"
+__version__ = "6.8.1"
diff --git a/pyproject.toml b/pyproject.toml
index 77cdd13db33..ac3d88b364b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -53,7 +53,10 @@ dependencies = [
 
   # Core application dependencies, pinned for reproducible builds.
   "fastapi-events",
-  "fastapi",
+  # FastAPI 0.119.0 breaks OpenAPI schema generation for the AnyInvocation class. It's not clear if this is an Invoke,
+  # FastAPI or pydantic bug. Probably Invoke's, because we are doing something unusual with AnyInvocation. 0.118.3 is
+  # the last known-good version.
+  "fastapi== 0.118.3",
   "huggingface-hub",
   "pydantic-settings",
   "pydantic",
diff --git a/uv.lock b/uv.lock
index 27bd96041aa..4313551b77c 100644
--- a/uv.lock
+++ b/uv.lock
@@ -728,16 +728,16 @@ wheels = [
 
 [[package]]
 name = "fastapi"
-version = "0.115.14"
+version = "0.118.3"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "pydantic" },
     { name = "starlette" },
     { name = "typing-extensions" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/ca/53/8c38a874844a8b0fa10dd8adf3836ac154082cf88d3f22b544e9ceea0a15/fastapi-0.115.14.tar.gz", hash = "sha256:b1de15cdc1c499a4da47914db35d0e4ef8f1ce62b624e94e0e5824421df99739", size = 296263, upload-time = "2025-06-26T15:29:08.21Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/44/e0/b2c4c5fed29587f0c0c56cec9b59f2c3ca58fd40e6c96d9a788219662a35/fastapi-0.118.3.tar.gz", hash = "sha256:5bf36d9bb0cd999e1aefcad74985a6d6a1fc3a35423d497f9e1317734633411d", size = 312055, upload-time = "2025-10-10T10:40:18.15Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/53/50/b1222562c6d270fea83e9c9075b8e8600b8479150a18e4516a6138b980d1/fastapi-0.115.14-py3-none-any.whl", hash = "sha256:6c0c8bf9420bd58f565e585036d971872472b4f7d3f6c73b698e10cffdefb3ca", size = 95514, upload-time = "2025-06-26T15:29:06.49Z" },
+    { url = "https://files.pythonhosted.org/packages/24/04/2f9e8a965f4214883258a6f716fea324d1b81e97bce6346cfbafffe6b86c/fastapi-0.118.3-py3-none-any.whl", hash = "sha256:8b9673dc083b4b9d3d295d49ba1c0a2abbfb293d34ba210fd9b0a90d5f39981e", size = 97957, upload-time = "2025-10-10T10:40:16.118Z" },
 ]
 
 [[package]]
@@ -1171,7 +1171,7 @@ requires-dist = [
     { name = "dnspython" },
     { name = "dynamicprompts" },
     { name = "einops" },
-    { name = "fastapi" },
+    { name = "fastapi", specifier = "==0.118.3" },
     { name = "fastapi-events" },
     { name = "gguf" },
     { name = "gprof2dot", marker = "extra == 'dev'" },