diff --git a/build.py b/build.py
index e670ca4..7549c22 100644
--- a/build.py
+++ b/build.py
@@ -74,8 +74,6 @@ chapter_to_build_variants = {
         'rei 2019.4.4 win',
         'rei 2019.4.3 unix',
         'rei 2019.4.4 unix',
-        'rei 2019.4.3 mac',
-        'rei 2019.4.4 mac',
     ],
 }
 
diff --git a/compileall.sh b/compileall.sh
index 3d940c4..765a530 100644
--- a/compileall.sh
+++ b/compileall.sh
@@ -25,6 +25,4 @@ cargo run matsuribayashi 2017.2.5 win && \
 cargo run rei 2019.4.3 win && \
 cargo run rei 2019.4.4 win && \
 cargo run rei 2019.4.3 unix && \
-cargo run rei 2019.4.4 unix && \
-cargo run rei 2019.4.3 mac && \
-cargo run rei 2019.4.4 mac
+cargo run rei 2019.4.4 unix