diff --git a/docs/install/linux.md b/docs/install/linux.md
index c74d33bc..1455431f 100644
--- a/docs/install/linux.md
+++ b/docs/install/linux.md
@@ -12,7 +12,7 @@ using the Git source-code management tool,
 or by clicking the download button on the right-hand side of the web-page
 and choosing an archive format.
 
-You will also need GCC 4.9 or higher,
+You will also need GCC 7 or higher,
 including the C and C++ compiler,
 GNU Make,
 and development files
diff --git a/docs/install/windows.md b/docs/install/windows.md
index 8f760981..541e8d0a 100644
--- a/docs/install/windows.md
+++ b/docs/install/windows.md
@@ -50,7 +50,7 @@ using the Git source-code management tool,
 or by clicking the download button on the right-hand side of the web-page
 and choosing an archive format.
 
-You will need a C++ compiler to compile higan.
+You will need a C++ compiler that supports C++17 to compile higan.
 We recommend installing the latest version of [MinGW-W64].
 higan does not support building with clang++
 (Clang is still not quite there yet for Windows)