diff --git a/ports/armadillo/portfile.cmake b/ports/armadillo/portfile.cmake
index 728e9fecf8..54295f1c24 100644
--- a/ports/armadillo/portfile.cmake
+++ b/ports/armadillo/portfile.cmake
@@ -4,7 +4,7 @@ vcpkg_from_sourceforge(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO arma
     FILENAME "armadillo-${VERSION}.tar.xz"
-    SHA512 163e81e09d3cd13aa80833ce06d9c4f1889110efa99532adfb66ffac6abb067eedb81775f9a988377d3197f75bfd3cefda56c003cbfe4f2b8256bed680a028de
+    SHA512 bf6a3db60256aa9789b52d92b33971a43816e73cd079d08e35350fcb251c213fba59604263595f886c4228147e75dd9308a5208ab9b290bb094128a1aee5da3d
     PATCHES
         cmake-config.patch
         dependencies.patch
diff --git a/ports/armadillo/vcpkg.json b/ports/armadillo/vcpkg.json
index d2b88a5e5f..92050bc826 100644
--- a/ports/armadillo/vcpkg.json
+++ b/ports/armadillo/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "armadillo",
-  "version": "12.4.1",
+  "version": "12.6.6",
   "description": "Armadillo is a high quality linear algebra library (matrix maths) for the C++ language, aiming towards a good balance between speed and ease of use",
   "homepage": "https://arma.sourceforge.net/",
   "license": "Apache-2.0",
diff --git a/versions/a-/armadillo.json b/versions/a-/armadillo.json
index ac10d14111..ea55c14c01 100644
--- a/versions/a-/armadillo.json
+++ b/versions/a-/armadillo.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "c47c5cebd38878763558370cea0db1d527f2fc0a",
+      "version": "12.6.6",
+      "port-version": 0
+    },
     {
       "git-tree": "b90cf9e80b6fc606809b1cdfa6b61c433848e197",
       "version": "12.4.1",
diff --git a/versions/baseline.json b/versions/baseline.json
index 718594be25..c2a0679b10 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -225,7 +225,7 @@
       "port-version": 0
     },
     "armadillo": {
-      "baseline": "12.4.1",
+      "baseline": "12.6.6",
       "port-version": 0
     },
     "arpack-ng": {