diff --git a/meson.build b/meson.build
index 52ddff365..c9f8145ad 100644
--- a/meson.build
+++ b/meson.build
@@ -15,6 +15,11 @@ project(
     'fmt:default_library=static',
     'gtest:default_library=static',
     'sqlite3:default_library=static',
+
+    # Not interested in compiler warnings from subprojects.
+    'fmt:warning_level=0',
+    'gtest:warning_level=0',
+    'sqlite3:warning_level=0',
   ],
   license: 'GPLv2+',
 )