diff --git a/CMakeLists.txt b/CMakeLists.txt
index a180288..a59dfca 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,7 +24,7 @@ set(MOZILLA_NMH_DIR "${CMAKE_INSTALL_LIBDIR}/mozilla/native-messaging-hosts"
   CACHE STRING "Directory for the Mozilla extension wrapper.")
 set(CMAKE_BUILD_TYPE "Release" CACHE STRING "The type of build.")
 
-set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
diff --git a/README.adoc b/README.adoc
index b9b60c6..494e266 100644
--- a/README.adoc
+++ b/README.adoc
@@ -76,7 +76,7 @@ only.
 ==== Dependencies
 
 * Tested OS: Linux
-* C++ compiler (tested: {uri-gcc}[gcc] 7/8/9, {uri-clang}[clang] 6/7)
+* C++ compiler ({uri-gcc}[gcc] 6+, {uri-clang}[clang] 6+)
 * {uri-cmake}[cmake] (at least: 3.9)
 * {uri-poco}[POCO] (tested: 1.9 / 1.7)
 * Optional: