diff --git a/source/isaaclab/changelog.d/vidurv-fix-docs-build-extra.rst b/source/isaaclab/changelog.d/vidurv-fix-docs-build-extra.rst
new file mode 100644
index 000000000000..b85d7acc07ac
--- /dev/null
+++ b/source/isaaclab/changelog.d/vidurv-fix-docs-build-extra.rst
@@ -0,0 +1,6 @@
+Fixed
+^^^^^
+
+* Fixed the ``isaaclab -d`` / ``./isaaclab.sh -d`` documentation build failing with
+  ``No module named sphinx``. The command resolved its environment from the ``test`` extra,
+  which does not provide the Sphinx toolchain; it now uses the ``dev`` extra that declares it.
diff --git a/source/isaaclab/isaaclab/cli/commands/misc.py b/source/isaaclab/isaaclab/cli/commands/misc.py
index d456ee20ca50..21d727cc993d 100644
--- a/source/isaaclab/isaaclab/cli/commands/misc.py
+++ b/source/isaaclab/isaaclab/cli/commands/misc.py
@@ -100,7 +100,7 @@ def command_build_docs() -> None:
         "run",
         "--isolated",
         "--extra",
-        "test",
+        "dev",
         "--",
         "python",
         "-m",
diff --git a/source/isaaclab/test/cli/test_misc_commands.py b/source/isaaclab/test/cli/test_misc_commands.py
index c193918b847c..06d5c8a359b0 100644
--- a/source/isaaclab/test/cli/test_misc_commands.py
+++ b/source/isaaclab/test/cli/test_misc_commands.py
@@ -24,8 +24,8 @@ def test_new_runs_template_generator_directly():
     run_python_command.assert_called_once_with(cli_script, ["--help"])
 
 
-def test_build_docs_runs_sphinx_with_the_uv_test_extra():
-    """The docs command must build through UV instead of an unpinned pip install."""
+def test_build_docs_runs_sphinx_with_the_uv_dev_extra():
+    """The docs command must use the UV extra that provides Sphinx."""
     docs_dir = misc.ISAACLAB_ROOT / "docs"
     output_dir = docs_dir / "_build" / "current"
 
@@ -41,7 +41,7 @@ def test_build_docs_runs_sphinx_with_the_uv_test_extra():
             "run",
             "--isolated",
             "--extra",
-            "test",
+            "dev",
             "--",
             "python",
             "-m",