diff --git a/README.rst b/README.rst
index 109004f..ccd046c 100644
--- a/README.rst
+++ b/README.rst
@@ -59,6 +59,7 @@ The MS³PIP Python application can perform the following tasks:
 - ``correlate``: Compare predicted and observed intensities and optionally compute correlations.
 - ``get-training-data``: Extract feature vectors and target intensities from observed spectra for
   training.
+- ``annotate-spectra``: Annotate peaks in observed spectra.
 
 MS²PIP supports a wide range of PSM input formats and spectrum output formats, and includes
 pre-trained models for multiple fragmentation methods, instruments and labeling techniques. See
diff --git a/ms2pip/__init__.py b/ms2pip/__init__.py
index 6c028fc..b25bb5e 100644
--- a/ms2pip/__init__.py
+++ b/ms2pip/__init__.py
@@ -1,7 +1,7 @@
 # isort: skip_file
 """MS2PIP: Accurate and versatile peptide fragmentation spectrum prediction."""
 
-__version__ = "4.0.0-dev12"
+__version__ = "4.0.0-dev13"
 
 from warnings import filterwarnings
 
diff --git a/ms2pip/search_space.py b/ms2pip/search_space.py
index 0c08192..be31109 100644
--- a/ms2pip/search_space.py
+++ b/ms2pip/search_space.py
@@ -40,6 +40,10 @@
 result in a cleavage rule that allows cleavage after any amino acid with an unlimited number of
 allowed missed cleavages.
 
+To disable protein digestion when the FASTA file contains peptides, set the cleavage rule to
+``-``. This will treat each line in the FASTA file as a separate peptide sequence, but still
+allow for modifications and charges to be added.
+
 
 Examples
 --------