diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8e91741..5e98e3b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -39,7 +39,7 @@ set(LIBS ${LIBS} ${Boost_LIBRARIES})
 # MKL
 set(MKL_ARCH "intel64")
 set(MKL_LINK "dynamic")
-set(MKL_THREADING "tbb_thread")
+set(MKL_THREADING "sequential")
 set(MKL_INTERFACE_FULL "intel_ilp64")
 add_compile_definitions(MKL_ILP64)
 find_package(MKL CONFIG REQUIRED)
diff --git a/README.md b/README.md
index c7b284e..b9e23a0 100644
--- a/README.md
+++ b/README.md
@@ -94,9 +94,9 @@ To learn how to use this library to design ED code for your own models, please r
 
     ```
     cd /tmp
-    wget https://github.com/opencollab/arpack-ng/archive/refs/heads/master.zip
-    unzip master.zip
-    cd arpack-ng-master/
+    wget https://github.com/opencollab/arpack-ng/archive/refs/tags/3.9.0.tar.gz
+    tar xf 3.9.0.tar.gz
+    cd arpack-ng-3.9.0
     sh bootstrap
     FFLAGS="-m64 -I${MKL_INC_DIR}" FCFLAGS="-m64 -I$MKL_INC_DIR" CFLAGS="-DMKL_ILP64 -m64 -I${MKL_INC_DIR}" CXXFLAGS="-DMKL_ILP64 -m64 -I${MKL_INC_DIR}" LIBS="-L${MKL_LIB_DIR} -Wl,--no-as-needed -lmkl_gf_ilp64 -lmkl_tbb_thread -lmkl_core -lpthread -ltbb -lstdc++ -lm -ldl" LIBSUFFIX="ILP64" INTERFACE64="1" ./configure --with-blas=mkl_gf_ilp64 --with-lapack=mkl_gf_ilp64 --enable-icb --prefix=$HOME/installs
     make check