diff --git a/docs/Makefile b/docs/Makefile
index 68c0958..288cc97 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2019-2024, Arm Limited. All rights reserved.
+# Copyright (c) 2019-2025, Arm Limited. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -24,5 +24,5 @@
 # Catch-all target: route all unknown targets to Sphinx using the new
 # "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
 .DEFAULT: Makefile
-	$(if $(host-poetry),$(q)poetry -q install --with=docs)
+	$(if $(host-poetry),$(q)poetry -q install --no-root --with=docs)
 	$(q)$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)