diff --git a/ddsp/colab/demos/timbre_transfer.ipynb b/ddsp/colab/demos/timbre_transfer.ipynb
index c62a955c..37cf404d 100644
--- a/ddsp/colab/demos/timbre_transfer.ipynb
+++ b/ddsp/colab/demos/timbre_transfer.ipynb
@@ -90,7 +90,7 @@
         "#@markdown Install ddsp, define some helper functions, and download the model. This transfers a lot of data and _should take a minute or two_.\n",
         "%tensorflow_version 2.x\n",
         "print('Installing from pip package...')\n",
-        "!pip install -qU ddsp=1.0.0\n",
+        "!pip install -qU ddsp==1.0.0\n",
         "\n",
         "# Ignore a bunch of deprecation warnings\n",
         "import warnings\n",