diff --git a/armadillo-4.500.1.tar.gz b/armadillo-4.500.1.tar.gz
deleted file mode 100644
index 0480978..0000000
--- a/armadillo-4.500.1.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:850965e696963c3f89451ca8c10d2e55b97a02cf33169f06a7945538e4c897ab
-size 5342046
diff --git a/armadillo-4.550.0.tar.gz b/armadillo-4.550.0.tar.gz
new file mode 100644
index 0000000..b475352
--- /dev/null
+++ b/armadillo-4.550.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:54a03bfe7dbf5d7a7aa8ef6e4101b9c6def7c7eeb74fbce4fc5981e4371204e1
+size 5344515
diff --git a/armadillo.changes b/armadillo.changes
index 7ed94e4..d8870ae 100644
--- a/armadillo.changes
+++ b/armadillo.changes
@@ -1,3 +1,13 @@
+-------------------------------------------------------------------
+Thu Nov 20 19:12:24 UTC 2014 - badshah400@gmail.com
+
+- Update to version 4.550 (Singapore Sling Deluxe):
+  + Added matrix exponential function: expmat()
+  + Faster .log_p() and .avg_log_p() functions in the gmm_diag
+    class when compiling with OpenMP enabled
+  + Faster handling of in-place addition/subtraction of
+    expressions with an outer product.
+
 -------------------------------------------------------------------
 Mon Nov  3 17:51:28 UTC 2014 - badshah400@gmail.com
 
diff --git a/armadillo.spec b/armadillo.spec
index 6162ee9..b6ca8de 100644
--- a/armadillo.spec
+++ b/armadillo.spec
@@ -19,7 +19,7 @@
 %define soname libarmadillo4
 
 Name:           armadillo
-Version:        4.500.1
+Version:        4.550.0
 Release:        0
 Summary:        Fast C++ matrix library with interfaces to LAPACK and ATLAS
 License:        MPL-2.0