diff --git a/.gitignore b/.gitignore
index 68d89dde..f9dec49b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,3 @@ __pycache__
 mythril.egg-info
 build
 dist
-contracts.json
-hunt*
-*.fs*
diff --git a/mythril/database/contractstorage.fs b/mythril/database/contractstorage.fs
new file mode 100644
index 00000000..1d4eb597
Binary files /dev/null and b/mythril/database/contractstorage.fs differ
diff --git a/mythril/database/contractstorage.fs.index b/mythril/database/contractstorage.fs.index
new file mode 100644
index 00000000..cb464437
Binary files /dev/null and b/mythril/database/contractstorage.fs.index differ
diff --git a/mythril/database/contractstorage.fs.lock b/mythril/database/contractstorage.fs.lock
new file mode 100644
index 00000000..0199dd90
--- /dev/null
+++ b/mythril/database/contractstorage.fs.lock
@@ -0,0 +1 @@
+ 40818
diff --git a/mythril/database/contractstorage.fs.tmp b/mythril/database/contractstorage.fs.tmp
new file mode 100644
index 00000000..e69de29b