diff --git a/meson.build b/meson.build
index 3724fac..f5476a9 100644
--- a/meson.build
+++ b/meson.build
@@ -5,6 +5,7 @@ add_project_arguments('-fvisibility=default', language: 'cpp')
 
 # Build external dependencies first so that all the embedded resources are available to the other targets
 subdir('build-config')
+subdir('subprojects/PicoSHA2')
 
 # Build the main project
 subdir('src')