diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8289159cf..0baefcf8b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -321,7 +321,7 @@ set(GNSSSDR_PROTOBUF_MIN_VERSION "3.0.0")
 ################################################################################
 set(GNSSSDR_GFLAGS_LOCAL_VERSION "2.2.2")
 set(GNSSSDR_GLOG_LOCAL_VERSION "0.6.0")
-set(GNSSSDR_ARMADILLO_LOCAL_VERSION "11.0.x")
+set(GNSSSDR_ARMADILLO_LOCAL_VERSION "11.1.x")
 if((CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0) OR
   (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0))
     set(GNSSSDR_GTEST_LOCAL_VERSION "1.10.x")
diff --git a/README.md b/README.md
index eb3d62fff..4eebe1323 100644
--- a/README.md
+++ b/README.md
@@ -381,9 +381,9 @@ $ sudo apt-get install libblas-dev liblapack-dev       # For Debian/Ubuntu/Linux
 $ sudo yum install lapack-devel blas-devel             # For Fedora/CentOS/RHEL
 $ sudo zypper install lapack-devel blas-devel          # For OpenSUSE
 $ sudo pacman -S blas lapack                           # For Arch Linux
-$ wget https://sourceforge.net/projects/arma/files/armadillo-11.0.1.tar.xz
-$ tar xvfz armadillo-11.0.1.tar.xz
-$ cd armadillo-11.0.1
+$ wget https://sourceforge.net/projects/arma/files/armadillo-11.1.1.tar.xz
+$ tar xvfz armadillo-11.1.1.tar.xz
+$ cd armadillo-11.1.1
 $ cmake .
 $ make
 $ sudo make install