diff --git a/flamingo_pytorch/flamingo_pytorch.py b/flamingo_pytorch/flamingo_pytorch.py
index 945ac4c..1e0a7b3 100644
--- a/flamingo_pytorch/flamingo_pytorch.py
+++ b/flamingo_pytorch/flamingo_pytorch.py
@@ -176,7 +176,7 @@ def forward(
             # any text without a preceding media needs to have attention zeroed out
             text_without_media_mask = text_time == 0
             text_without_media_mask = rearrange(text_without_media_mask, 'b i -> b 1 i 1')
-            attn.masked_fill(text_without_media_mask, 0.)
+            attn = attn.masked_fill(text_without_media_mask, 0.)
 
         out = einsum('... i j, ... j d -> ... i d', attn, v)
         out = rearrange(out, 'b h n d -> b n (h d)')
diff --git a/setup.py b/setup.py
index 8e7f26a..698de6a 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 setup(
   name = 'flamingo-pytorch',
   packages = find_packages(exclude=[]),
-  version = '0.1.1',
+  version = '0.1.2',
   license='MIT',
   description = 'Flamingo - Pytorch',
   author = 'Phil Wang',