diff --git a/srclibs/fpc.yml b/srclibs/fpc.yml
index 851cdf7bfd..2c94fdd45d 100644
--- a/srclibs/fpc.yml
+++ b/srclibs/fpc.yml
@@ -1,2 +1,6 @@
 RepoType: git
 Repo: https://gitlab.com/freepascal.org/fpc/source.git
+
+Prepare: |
+  export build_date=$(git show --no-patch --format=%cd --date=format-local:'%Y/%m/%d')
+  sed -i -e "s:build_date = .*:build_date = \"$build_date\";:" utils/fpcres/fpcres.pas