https://github.com/open-eid/DigiDoc4-Client/pull/409

--- digidoc4-client-4.2.0.43/CMakeLists.txt~	2018-11-29 16:48:25.000000000 +0200
+++ digidoc4-client-4.2.0.43/CMakeLists.txt	2018-12-10 22:16:09.691434806 +0200
@@ -15,7 +15,7 @@
 include( VersionInfo )
 
 find_package( PKCS11 )
-find_package( LibDigiDocpp REQUIRED )
+find_package( LibDigiDocpp 3.13.9 REQUIRED)
 find_package( Qt5 COMPONENTS Core Widgets Network PrintSupport Svg LinguistTools REQUIRED )
 find_library( AWP_MODULE NAMES libOcsCryptoki.dylib PATHS /Library/AWP/lib /usr/local/AWP/lib )
 include_directories( ${LIBDIGIDOCPP_INCLUDE_DIR} )