diff --git a/.gitmodules b/.gitmodules
index 760119345..f899e248d 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "sw/deps/printf"]
 	path = sw/deps/printf
 	url = https://github.com/mpaland/printf.git
+[submodule "sw/deps/riscv-isa-sim"]
+	path = sw/deps/riscv-isa-sim
+	url = https://github.com/pulp-platform/riscv-isa-sim.git
+	branch = GiannaP-snitch
\ No newline at end of file
diff --git a/sw/deps/riscv-isa-sim b/sw/deps/riscv-isa-sim
new file mode 160000
index 000000000..46ac2de64
--- /dev/null
+++ b/sw/deps/riscv-isa-sim
@@ -0,0 +1 @@
+Subproject commit 46ac2de6484737b87d66aca0909c65011ab25356