diff --git a/cmake/AvogadroCPack.cmake b/cmake/AvogadroCPack.cmake
index e59eb721..3ae3da06 100644
--- a/cmake/AvogadroCPack.cmake
+++ b/cmake/AvogadroCPack.cmake
@@ -16,7 +16,7 @@ if(APPLE)
     "${AvogadroApp_SOURCE_DIR}/avogadro/icons/avogadro.icns")
   set(CPACK_BUNDLE_ICON "${CPACK_PACKAGE_ICON}")
 
-  if(${CMAKE_VERSION} VERSION_GREATER "3.19.0") 
+  if(${CMAKE_VERSION} VERSION_GREATER "3.19.0")
     # add the codesign options to the package
     configure_file("${CMAKE_CURRENT_LIST_DIR}/deploy-osx.cmake.in" "${AvogadroApp_BINARY_DIR}/deploy-osx.cmake" @ONLY)
     set(CPACK_PRE_BUILD_SCRIPTS "${AvogadroApp_BINARY_DIR}/deploy-osx.cmake")
@@ -51,6 +51,12 @@ if(INSTALL_BUNDLE_FILES)
   install(DIRECTORY "${AvogadroLibs_DATA_DIR}/avogadro2"
     DESTINATION ${INSTALL_DATA_DIR})
 
+  if (WIN32)
+    # copy the OpenSSL DLLs
+    find_package(OpenSSL REQUIRED)
+    install(FILES ${OPENSSL_LIBRARIES} DESTINATION ${INSTALL_RUNTIME_DIR})
+  endif()
+
   # create a list of exe to run fixup_bundle on
   set(BUNDLE_EXE_LIST "")