diff --git a/CMakeLists.txt b/CMakeLists.txt
index c35a4e0..814ba0c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@ project(
 	LANGUAGES CXX
 )
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 # opustags is mainly developed with glibc, which introduces a few
diff --git a/README.md b/README.md
index 31c961b..3c418f9 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ Requirements
 ------------
 
 * a POSIX-compliant system,
-* a C++17 compiler,
+* a C++20 compiler,
 * CMake ≥ 3.11,
 * libogg 1.3.3.