diff --git a/build-gf.sh b/build-gf.sh
index 8fbb128..feeb2ab 100644
--- a/build-gf.sh
+++ b/build-gf.sh
@@ -4,3 +4,7 @@ SANS_SOURCES=Sans/Variable/TTF/Subset/*ttf
 
 python3 google-fonts/hotfix.py --output-dir=google-fonts $SERIF_SOURCES $SANS_SOURCES
 add-chws -o google-fonts google-fonts/*ttf
+
+# Build TTCs for Android
+fonttools ttLib -o google-fonts/'NotoSansCJK[wght].ttf.ttc' google-fonts/NotoSans*.ttf
+fonttools ttLib -o google-fonts/'NotoSerifCJK[wght].ttf.ttc' google-fonts/NotoSerif*.ttf
diff --git a/google-fonts/NotoSansCJK[wght].ttf.ttc b/google-fonts/NotoSansCJK[wght].ttf.ttc
new file mode 100644
index 0000000..1f74229
Binary files /dev/null and b/google-fonts/NotoSansCJK[wght].ttf.ttc differ
diff --git a/google-fonts/NotoSerifCJK[wght].ttf.ttc b/google-fonts/NotoSerifCJK[wght].ttf.ttc
new file mode 100644
index 0000000..cebdd83
Binary files /dev/null and b/google-fonts/NotoSerifCJK[wght].ttf.ttc differ