diff --git a/dep/SFMT/CMakeLists.txt b/dep/SFMT/CMakeLists.txt
index 84f5cc6afc4..0e66f6598e8 100644
--- a/dep/SFMT/CMakeLists.txt
+++ b/dep/SFMT/CMakeLists.txt
@@ -74,5 +74,7 @@ elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "i686|amd64|x86_64|AMD64")
   target_compile_definitions(sfmt PUBLIC -DHAVE_SSE2)
 endif ()
 
+set_target_properties(sfmt PROPERTIES LINKER_LANGUAGE CXX)
+
 # inherit trinitycore generic build options (e.g. fPIC)
 target_link_libraries(sfmt PRIVATE trinity-dependency-interface)
diff --git a/dep/bzip2/CMakeLists.txt b/dep/bzip2/CMakeLists.txt
index c04609669d9..5885bb3160c 100644
--- a/dep/bzip2/CMakeLists.txt
+++ b/dep/bzip2/CMakeLists.txt
@@ -26,6 +26,8 @@ else()
   add_library(bzip2 STATIC
     ${sources})
 
+  set_target_properties(bzip2 PROPERTIES LINKER_LANGUAGE CXX)
+
   target_include_directories(bzip2
     PUBLIC
       ${CMAKE_CURRENT_SOURCE_DIR})
diff --git a/dep/zlib/CMakeLists.txt b/dep/zlib/CMakeLists.txt
index d1c8295c111..49b25277a2f 100644
--- a/dep/zlib/CMakeLists.txt
+++ b/dep/zlib/CMakeLists.txt
@@ -39,6 +39,8 @@ else()
   add_library(zlib STATIC
     ${zlib_STAT_SRCS})
 
+  set_target_properties(zlib PROPERTIES LINKER_LANGUAGE CXX)
+
   target_include_directories(zlib
     PUBLIC
       ${CMAKE_CURRENT_SOURCE_DIR})