diff --git a/docs/src/api.md b/docs/src/api.md
index 0e7f3f8..e4ca9e2 100644
--- a/docs/src/api.md
+++ b/docs/src/api.md
@@ -29,6 +29,8 @@ string_to_varname
 AbstractProbabilisticProgram
 condition
 decondition
+fix
+unfix
 logdensityof
 AbstractContext
 evaluate!!