diff --git a/azure-storage-cpp.spec b/azure-storage-cpp.spec
index 04731f3..a744987 100644
--- a/azure-storage-cpp.spec
+++ b/azure-storage-cpp.spec
@@ -32,6 +32,7 @@ BuildRequires:  libboost_filesystem-devel
 BuildRequires:  libboost_locale-devel
 BuildRequires:  libboost_log-devel
 BuildRequires:  libboost_random-devel
+BuildRequires:  libboost_regex-devel
 BuildRequires:  libboost_thread-devel
 BuildRequires:  pkgconfig
 BuildRequires:  unittest-cpp-devel