diff --git a/src/build.py b/src/build.py
index 1a14893..48395b2 100644
--- a/src/build.py
+++ b/src/build.py
@@ -40,7 +40,7 @@ def build_generation(args: argparse.Namespace, mg: MonoGen) -> None:
         return
 
     logger.info(f'Building monobase generation {mg.id}...')
-    os.makedirs(gdir)
+    os.makedirs(gdir, exist_ok=True)
 
     for k, v in mg.cuda.items():
         src = install_cuda(args, v)
@@ -72,7 +72,7 @@ def build_generation(args: argparse.Namespace, mg: MonoGen) -> None:
 
 
 def build(args: argparse.Namespace) -> None:
-    os.makedirs(args.cache)
+    os.makedirs(args.cache, exist_ok=True)
 
     for mg in MONOGENS[args.environment]:
         if mg.id < args.min_gen_id or mg.id > args.max_gen_id:
diff --git a/src/cuda.py b/src/cuda.py
index 6229385..9f6069a 100644
--- a/src/cuda.py
+++ b/src/cuda.py
@@ -101,7 +101,7 @@ def install_cudnn(args: argparse.Namespace, version: str, cuda_major: str) -> st
     subprocess.run(cmd, check=True)
 
     logger.info(f'Installing CuDNN {key}...')
-    os.makedirs(cdir)
+    os.makedirs(cdir, exist_ok=True)
     cmd = ['tar', '-xf', file, '--strip-components=1', '--exclude=lib*.a', '-C', cdir]
     subprocess.run(cmd, check=True)
     os.remove(file)