diff --git a/math/mlpack/Portfile b/math/mlpack/Portfile
index 07f0c2c0579c3..87056475890dc 100644
--- a/math/mlpack/Portfile
+++ b/math/mlpack/Portfile
@@ -10,7 +10,7 @@ boost.version       1.81
 compilers.choose    cc cxx
 
 name                mlpack
-version             4.5.0
+version             4.5.1
 revision            0
 categories          math devel science
 license             BSD
@@ -24,9 +24,9 @@ long_description \
 homepage            https://mlpack.org
 master_sites        ${homepage}/files/
 
-checksums           rmd160  57a80aa2e3da7e04b180ec8f168efdce7df2f03d \
-                    sha256  aab70aee10c134ef3fe568843fe4b3bb5e8901af30ea666f57462ad950682317 \
-                    size    6376837
+checksums           rmd160  713e8b875ea15b19cb147531e9a9178c2f5c6a3f \
+                    sha256  58059b911a78b8bda91eef4cfc6278383b24e71865263c2e0569cf5faa59dda3 \
+                    size    6590839
 
 depends_lib-append  port:armadillo \
                     port:cereal \