diff --git a/README.md b/README.md
index e9a1335..e937180 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ This template tracks the master branch of Zig, *not* 0.8.1.  It may not work wit
 
 ## How to use this template:
 
-The src/ directory contains a main file for each day.  Put your code there.  The build command `zig build dayXX [target and mode options] -- [program args]` will build and run the specified day.  You can also use `zig build install_dayXX [target and mode options]` to build the executable for a day and put it into `zig-out/bin` without executing it.  By default this template does not link libc, but you can set `should_link_libc` to `true` in build.zig to change that.  If you have files with tests, add those files to the list of test files in build.zig.  The command `zig build test` will run tests in all of these files.
+The src/ directory contains a main file for each day.  Put your code there.  The build command `zig build dayXX [target and mode options] -- [program args]` will build and run the specified day.  You can also use `zig build install_dayXX [target and mode options]` to build the executable for a day and put it into `zig-out/bin` without executing it.  By default this template does not link libc, but you can set `should_link_libc` to `true` in build.zig to change that.  If you add new files with tests, add those files to the list of test files in test_all.zig.  The command `zig build test` will run tests in all of these files.  You can also use `zig build test_dayXX` to run tests in a specific day, or `zig build install_tests_dayXX` to create a debuggable test executable in `zig-out/bin`.
 
 Each day contains a decl like this:
 ```zig