diff --git a/sci-libs/alglib/alglib-3.16.0.recipe b/sci-libs/alglib/alglib-4.00.0.recipe
similarity index 94%
rename from sci-libs/alglib/alglib-3.16.0.recipe
rename to sci-libs/alglib/alglib-4.00.0.recipe
index 5224aeffa..508444ce5 100644
--- a/sci-libs/alglib/alglib-3.16.0.recipe
+++ b/sci-libs/alglib/alglib-4.00.0.recipe
@@ -13,10 +13,10 @@ solvers
 HOMEPAGE="https://www.alglib.net/"
 COPYRIGHT="1999-2019 Sergey Bochkanov"
 LICENSE="GNU GPL v2"
-REVISION="2"
+REVISION="1"
 SOURCE_URI="https://www.alglib.net/translator/re/alglib-$portVersion.cpp.gpl.tgz"
-CHECKSUM_SHA256="41fa15d25f7332f357ebecdec3e5370619361365b469b6c92401fec059b69867"
-SOURCE_DIR="cpp"
+CHECKSUM_SHA256="827b5f559713a3e8c7c1452ed1ffd5227adb9622d1a165ceb70c117c8ed3ccb4"
+SOURCE_DIR="alglib-cpp"
 ADDITIONAL_FILES="CMakeLists.txt.in"
 
 ARCHITECTURES="all !x86_gcc2"