diff --git a/cmake/CompileBoost.cmake b/cmake/CompileBoost.cmake
index 77bdb8b542..f1097902f7 100644
--- a/cmake/CompileBoost.cmake
+++ b/cmake/CompileBoost.cmake
@@ -4,7 +4,11 @@ if(NOT BOOSTROOT AND NOT BOOST_ROOT)
   # We can fix this for boost versions > 1.70
   set(BOOST_ROOT /opt/boost_1_67_0)
 endif()
-find_package(Boost 1.67)
+
+# Bug in boost subprocess in 1.72! In release-6.3 and later we replaced the
+# boost subprocess usage with our own thing, but for release-6.2 it's important
+# that we use boost 1.67 exactly.
+find_package(Boost 1.67 EXACT)
 
 if(Boost_FOUND)
   add_library(boost_target INTERFACE)