diff --git a/doc/src/dihedral_style.rst b/doc/src/dihedral_style.rst
index 45dd66e750..56b8ff5226 100644
--- a/doc/src/dihedral_style.rst
+++ b/doc/src/dihedral_style.rst
@@ -10,7 +10,7 @@ Syntax
 
    dihedral_style style
 
-* style = *none* or *zero* or *hybrid* or *charmm* or *charmmfsw* or *class2* or *cosine/shift/exp* or *fourier* or *harmonic* or *helix* or *lepton* or *multi/harmonic* or *nharmonic* or *opls* or *spherical* or *table* or *table/cut*
+* style = *none* or *zero* or *hybrid* or *charmm* or *charmmfsw* or *class2* or *cosine/shift/exp* or *cosine/squared/restricted* or *fourier* or *harmonic* or *helix* or *lepton* or *multi/harmonic* or *nharmonic* or *opls* or *spherical* or *table* or *table/cut*
 
 Examples
 """"""""
@@ -105,6 +105,7 @@ exist.
 * :doc:`charmmfsw <dihedral_charmm>` - CHARMM dihedral with force switching
 * :doc:`class2 <dihedral_class2>` - COMPASS (class 2) dihedral
 * :doc:`cosine/shift/exp <dihedral_cosine_shift_exp>` - dihedral with exponential in spring constant
+* :doc:`cosine/squared/restricted <dihedral_cosine_squared_restricted>` - squared cosine dihedral with restricted term
 * :doc:`fourier <dihedral_fourier>` - dihedral with multiple cosine terms
 * :doc:`harmonic <dihedral_harmonic>` - harmonic dihedral
 * :doc:`helix <dihedral_helix>` - helix dihedral