diff --git a/SIONlib-DEEP-SEA-foss-2022a.eb b/SIONlib-DEEP-SEA-foss-2022a.eb
index 2856624a5ee02a63f9223a1d9091144c2b738b32..d69e30faa6169735b09434fcc7a39cbf9206dea0 100644
--- a/SIONlib-DEEP-SEA-foss-2022a.eb
+++ b/SIONlib-DEEP-SEA-foss-2022a.eb
@@ -20,6 +20,7 @@ builddependencies = [('CMake', '3.23.1')]
 
 source_urls = ['https://gitlab.jsc.fz-juelich.de/cstao-public/SIONlib/sionlib-deep-sea/-/raw/main/SIONlib-%(version)s.tar.gz?inline=false']
 sources = ['SIONlib-%(version)s.tar.gz']
+checksums = ['2c69c93d52536fcf13c4c9c38765ddca2fcf7f34a1a7aa001b4b3767f508b5eb']
 
 sanity_check_paths = {
     'files': [