diff --git a/Golden_Repo/b/Blosc/Blosc-1.21.1-GCCcore-11.3.0.eb b/Golden_Repo/b/Blosc/Blosc-1.21.3-GCCcore-11.3.0.eb
similarity index 86%
rename from Golden_Repo/b/Blosc/Blosc-1.21.1-GCCcore-11.3.0.eb
rename to Golden_Repo/b/Blosc/Blosc-1.21.3-GCCcore-11.3.0.eb
index f053959b32c2b12b657ef0bffd6c5ab7386b01a4..115e49c59acda6f273c99e4cf774fd60ef392bdf 100644
--- a/Golden_Repo/b/Blosc/Blosc-1.21.1-GCCcore-11.3.0.eb
+++ b/Golden_Repo/b/Blosc/Blosc-1.21.3-GCCcore-11.3.0.eb
@@ -1,7 +1,7 @@
 easyblock = 'CMakeMake'
 
 name = 'Blosc'
-version = '1.21.1'
+version = '1.21.3'
 
 homepage = 'https://www.blosc.org/'
 
@@ -12,7 +12,7 @@ toolchainopts = {'pic': True, 'cstd': 'c++11'}
 
 source_urls = ['https://github.com/Blosc/c-blosc/archive/']
 sources = ['v%(version)s.tar.gz']
-checksums = ['f387149eab24efa01c308e4cba0f59f64ccae57292ec9c794002232f7903b55b']
+checksums = ['941016c4564bca662080bb01aea74f06630bd665e598c6f6967fd91b2e2e0bb6']
 
 builddependencies = [
     ('binutils', '2.38'),