diff --git a/.gitignore b/.gitignore
index 40366917..e3c498b9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,8 +5,10 @@ __pycache__/
 # Temporary output files
 *.swp
 *.swo
+*.swn
 *.txt
 *.out
+*.log
 
 # Generated Python Package files
 *.egg-info/
@@ -55,3 +57,6 @@ synthetic/
 
 # Temporary scripts
 download_suitesparse_partial.sh
+
+# Network Filesystem 
+.nfs*
diff --git a/requirements.txt b/requirements.txt
index 1b7cab3d..8671a953 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,5 +25,6 @@ PyYAML==6.0
 requests==2.28.2
 scipy==1.10.0
 six==1.16.0
+sparse==0.13.0
 tomli==2.0.1
 tqdm==4.64.1