diff --git a/src/doc_builder/mock_deps/diffusers.txt b/src/doc_builder/mock_deps/diffusers.txt
index 1de9f4db..32eea71c 100644
--- a/src/doc_builder/mock_deps/diffusers.txt
+++ b/src/doc_builder/mock_deps/diffusers.txt
@@ -12,3 +12,6 @@ real:pillow
 real:transformers
 bitsandbytes
 real:sentencepiece  # kolors tokenizer imports it at module level
+optimum  # optimum-quanto backend for quantization docs (also avoids diffusers' optimum_quanto/quanto BACKENDS_MAPPING KeyError in the dummy path)
+torchao
+gguf