diff --git a/src/libexpr-tests/meson.build b/src/libexpr-tests/meson.build
index 1f3973681..cc203d60e 100644
--- a/src/libexpr-tests/meson.build
+++ b/src/libexpr-tests/meson.build
@@ -75,6 +75,7 @@ this_exe = executable(
   # TODO: -lrapidcheck, see ../libutil-support/build.meson
   link_args : linker_export_flags + [ '-lrapidcheck' ],
   install : true,
+  cpp_pch : do_pch ? [ 'pch/precompiled-headers.hh' ] : [],
 )
 
 test(
diff --git a/src/libexpr-tests/pch/precompiled-headers.hh b/src/libexpr-tests/pch/precompiled-headers.hh
new file mode 100644
index 000000000..63bf023a2
--- /dev/null
+++ b/src/libexpr-tests/pch/precompiled-headers.hh
@@ -0,0 +1,4 @@
+#include "nix/expr/tests/libexpr.hh"
+
+#include <gtest/gtest.h>
+#include <gmock/gmock.h>