diff --git a/pyproject.toml b/pyproject.toml
index c848ec4e..4c348a4e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,6 +45,9 @@ dependencies = [
     # an Apple Silicon resolve falls back to the sdist, which contains no
     # binary at all and fails only later, at the first video indexed.
     "imageio-ffmpeg>=0.6.0",
+    # Imported by the InvokeAI client and router. It used to arrive transitively
+    # via huggingface_hub 1.x, but huggingface_hub 2.x depends on httpx2 instead.
+    "httpx",
     "jinja2",
     "networkx",
     "numpy",
diff --git a/uv.lock b/uv.lock
index ffcefbb1..98d1e2e9 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1748,6 +1748,7 @@ dependencies = [
     { name = "colorama" },
     { name = "dash" },
     { name = "fastapi" },
+    { name = "httpx" },
     { name = "imageio-ffmpeg" },
     { name = "jinja2" },
     { name = "networkx", version = "3.4.2", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version < '3.11'" },
@@ -1804,6 +1805,7 @@ requires-dist = [
     { name = "colorama" },
     { name = "dash" },
     { name = "fastapi" },
+    { name = "httpx" },
     { name = "httpx", marker = "extra == 'testing'" },
     { name = "imageio-ffmpeg", specifier = ">=0.6.0" },
     { name = "jinja2" },