diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 000000000..3d7169bbc
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,8 @@
+# For macOS, support 10.9 on x86-64, and 11.0 on aarch64, which
+# is the minimum supported version for Apple Silicon.
+[target.x86_64-apple-darwin]
+rustflags = ["-C", "link-arg=-mmacosx-version-min=10.9"]
+
+[target.aarch64-apple-darwin]
+rustflags = ["-C", "link-arg=-mmacosx-version-min=11.0"]
+
diff --git a/build_tools/make_pkg.sh b/build_tools/make_pkg.sh
index 5dc0272fc..f5159570c 100755
--- a/build_tools/make_pkg.sh
+++ b/build_tools/make_pkg.sh
@@ -67,28 +67,28 @@ mkdir -p "$PKGDIR/build_x86_64" "$PKGDIR/build_arm64" "$PKGDIR/root" "$PKGDIR/in
 # and will probably not be built universal, so the package will fail to validate/run on other systems.
 # Note CMAKE_OSX_ARCHITECTURES is still relevant for the Mac app.
 { cd "$PKGDIR/build_arm64" \
-  && cmake -DMAC_INJECT_GET_TASK_ALLOW=OFF \
+  && cmake \
         -DCMAKE_BUILD_TYPE=RelWithDebInfo \
         -DCMAKE_EXE_LINKER_FLAGS="-Wl,-ld_classic" \
         -DWITH_GETTEXT=OFF \
         -DRust_CARGO_TARGET=aarch64-apple-darwin \
-        -DCMAKE_OSX_ARCHITECTURES='arm64;x86_64' \
+        -DCMAKE_OSX_ARCHITECTURES='arm64' \
         -DFISH_USE_SYSTEM_PCRE2=OFF \
         "$SRC_DIR" \
-    && make VERBOSE=1 -j 12 \
-    && env DESTDIR="$PKGDIR/root/" make install;
+    && env MACOSX_DEPLOYMENT_TARGET="11.0" make VERBOSE=1 -j 12 \
+    && env DESTDIR="$PKGDIR/root/" MACOSX_DEPLOYMENT_TARGET="11.0" make install;
 }
 
 # Build for x86-64 but do not install; instead we will make some fat binaries inside the root.
 { cd "$PKGDIR/build_x86_64" \
-  && cmake -DMAC_INJECT_GET_TASK_ALLOW=OFF \
+  && cmake \
         -DCMAKE_BUILD_TYPE=RelWithDebInfo \
         -DCMAKE_EXE_LINKER_FLAGS="-Wl,-ld_classic" \
         -DWITH_GETTEXT=OFF \
         -DRust_CARGO_TARGET=x86_64-apple-darwin \
-        -DCMAKE_OSX_ARCHITECTURES='arm64;x86_64' \
+        -DCMAKE_OSX_ARCHITECTURES='x86_64' \
         -DFISH_USE_SYSTEM_PCRE2=OFF "$SRC_DIR" \
-  && make VERBOSE=1 -j 12; }
+  && env MACOSX_DEPLOYMENT_TARGET="10.9" make VERBOSE=1 -j 12; }
 
 # Fatten them up.
 for FILE in "$PKGDIR"/root/usr/local/bin/*; do
diff --git a/cmake/MacApp.cmake b/cmake/MacApp.cmake
index e3e0abafa..9a2b5566c 100644
--- a/cmake/MacApp.cmake
+++ b/cmake/MacApp.cmake
@@ -6,6 +6,9 @@ endif (NOT APPLE)
 # The source tree containing certain macOS resources.
 set(OSX_DIR ${CMAKE_CURRENT_SOURCE_DIR}/osx)
 
+# 10.9 is the minimum supported version.
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.9")
+
 set(RESOURCE_FILES
     ${OSX_DIR}/launch_fish.scpt
     ${OSX_DIR}/fish_term_icon.icns