diff --git a/CMakeLists.txt b/CMakeLists.txt
index b44912f..6ba1c13 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,9 +23,9 @@ set(KF5_VERSION "5.17.0")
 set(KDEPIMLIBS_LIB_VERSION "5.1.42")
 set(MESSAGELIB_LIB_VERSION "5.1.42")
 set(QT_REQUIRED_VERSION "5.4.0")
-set(KMIME_LIB_VERSION "4.87.0")
-set(KMAILTRANSPORT_LIB_VERSION "4.78.0")
-set(KLDAP_LIB_VERSION "4.80.0")
+set(KMIME_LIB_VERSION "5.1.40")
+set(KMAILTRANSPORT_LIB_VERSION "5.1.40")
+set(KLDAP_LIB_VERSION "5.1.40")
 set(MAILIMPORTER_LIB_VERSION "5.1.42")
 set(LIBKDEPIM_LIB_VERSION "5.1.42")
 set(PIMCOMMON_LIB_VERSION "5.1.42")