diff --git a/CMakeLists.txt b/CMakeLists.txt
index 41f11a9..71d27c1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required (VERSION 3.7)
 project(controller
-        VERSION 0.2.5
+        VERSION 0.2.6
         LANGUAGES C)
 
 add_executable(controller src/main.c)
@@ -12,6 +12,7 @@ target_link_libraries(controller -luuid)
 
 option(WIRING_PI_DEBUG "Use WiringPi Debugging Tool (OFF)" OFF)
 
+set(CMAKE_C_FLAGS "$ENV{CFLAGS}")
 SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99 -Wpedantic -Werror -Wall -Wextra -ffile-prefix-map=${CMAKE_SOURCE_DIR}/src/=")
 
 set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -g -fprofile-arcs -ftest-coverage")