diff --git a/example/cpp/CMakeLists.txt b/example/cpp/CMakeLists.txt
index 234d504d8..b3c6878a0 100644
--- a/example/cpp/CMakeLists.txt
+++ b/example/cpp/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.1 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.4 FATAL_ERROR)
 
 project(TdExample VERSION 1.0 LANGUAGES CXX)
 
diff --git a/td/generate/tl-parser/CMakeLists.txt b/td/generate/tl-parser/CMakeLists.txt
index 442ce674a..6cf5331f4 100644
--- a/td/generate/tl-parser/CMakeLists.txt
+++ b/td/generate/tl-parser/CMakeLists.txt
@@ -1,5 +1,11 @@
 cmake_minimum_required(VERSION 3.0 FATAL_ERROR)
 
+if (POLICY CMP0065)
+  # do not export symbols from executables
+  # affects compiler checks in project(), so must be set before it
+  cmake_policy(SET CMP0065 NEW)
+endif()
+
 project(tl-parser LANGUAGES C)
 
 set(SOURCES crc32.h crc32.c tlc.c tl-parser.c tl-parser.h tl-parser-tree.h tl-tl.h portable_endian.h)