diff --git a/build.sh b/build.sh
index 9dc71d79c..4a207581d 100755
--- a/build.sh
+++ b/build.sh
@@ -6,14 +6,17 @@ PRODUCTS_DIR="${DERIVED_DATA_DIR}/Build/Products"
 # carthage adds these, not sure if necessary
 EXTRA_ARGS="ONLY_ACTIVE_ARCH=NO CODE_SIGNING_REQUIRED=NO CODE_SIGN_IDENTITY="
 
+# Embed bitcode for iphoneos binaries
+EXTRA_IPHONEOS_ARGS="ENABLE_BITCODE=YES BITCODE_GENERATION_MODE=bitcode"
+
 # libetpan has been set up to build an xcframework for libsasl2, however xcframeworks must exist at the *start* of the build process
 # I didn't have time to figure out something less awful than building libetpan first
 # It'll copy sasl.xcframework to the build directory
-xcodebuild -project build-mac/mailcore2.xcodeproj -scheme "libetpan ios" -configuration Release -derivedDataPath ${DERIVED_DATA_DIR} -sdk iphoneos ${EXTRA_ARGS}
+xcodebuild -project build-mac/mailcore2.xcodeproj -scheme "libetpan ios" -configuration Release -derivedDataPath ${DERIVED_DATA_DIR} -sdk iphoneos ${EXTRA_ARGS} ${EXTRA_IPHONEOS_ARGS}
 xcodebuild -project build-mac/mailcore2.xcodeproj -scheme "libetpan ios" -configuration Release -derivedDataPath ${DERIVED_DATA_DIR} -sdk iphonesimulator ${EXTRA_ARGS}
 
 # mailcore2 references the sasl.xcframework in the build directory
-xcodebuild -project build-mac/mailcore2.xcodeproj -scheme "mailcore ios" -configuration Release -derivedDataPath ${DERIVED_DATA_DIR} -sdk iphoneos ${EXTRA_ARGS}
+xcodebuild -project build-mac/mailcore2.xcodeproj -scheme "mailcore ios" -configuration Release -derivedDataPath ${DERIVED_DATA_DIR} -sdk iphoneos ${EXTRA_ARGS} ${EXTRA_IPHONEOS_ARGS}
 xcodebuild -project build-mac/mailcore2.xcodeproj -scheme "mailcore ios" -configuration Release -derivedDataPath ${DERIVED_DATA_DIR} -sdk iphonesimulator ${EXTRA_ARGS}
 
 # glue it all together