diff --git a/python-statsmodels.spec b/python-statsmodels.spec
index 22e9e11..9297959 100644
--- a/python-statsmodels.spec
+++ b/python-statsmodels.spec
@@ -26,6 +26,7 @@ BuildRequires: tex(utf8x.def)
 BuildRequires: tex-preview
 BuildRequires: graphviz
 BuildRequires: python-mock
+BuildRequires: python2-sphinx-theme-alabaster
 
 Requires: numpy scipy python-patsy python-pandas
 
@@ -50,6 +51,7 @@ BuildRequires: python3-devel python3-nose
 BuildRequires: python3-numpy python3-scipy python3-Cython python3-patsy python3-pandas
 BuildRequires: python3-sphinx python3-matplotlib python-ipython-sphinx
 BuildRequires: python3-mock
+BuildRequires: python3-sphinx-theme-alabaster
 
 Requires: python3-numpy python3-scipy python3-patsy python3-pandas