diff --git a/doc/source/reference_manual/index.rst b/doc/source/reference_manual/index.rst
index 90aacd6..2515750 100644
--- a/doc/source/reference_manual/index.rst
+++ b/doc/source/reference_manual/index.rst
@@ -45,3 +45,4 @@ cscripts
    csspec --- Computes spectral points <csspec>
    csresmap --- Generates residual map <csresmap>
    cstsdist --- Generates TS distribution <cstsdist>
+   csobs2caldb --- Creates a <caldb> entry from an input observation