diff --git a/src/tools/rust-installer/combine-installers.sh b/src/tools/rust-installer/combine-installers.sh
index bee5319fd550..c2de3385a808 100755
--- a/src/tools/rust-installer/combine-installers.sh
+++ b/src/tools/rust-installer/combine-installers.sh
@@ -11,5 +11,7 @@ abs_path() {
     (unset CDPATH && cd "$path" > /dev/null && pwd)
 }
 
+export RUSTC_BOOTSTRAP=1
+
 src_dir="$(abs_path $(dirname "$0"))"
 $CARGO run --manifest-path="$src_dir/Cargo.toml" -- combine "$@"
diff --git a/src/tools/rust-installer/gen-installer.sh b/src/tools/rust-installer/gen-installer.sh
index eabd8c95cd84..10a69ff5ac5c 100755
--- a/src/tools/rust-installer/gen-installer.sh
+++ b/src/tools/rust-installer/gen-installer.sh
@@ -11,5 +11,7 @@ abs_path() {
     (unset CDPATH && cd "$path" > /dev/null && pwd)
 }
 
+export RUSTC_BOOTSTRAP=1
+
 src_dir="$(abs_path $(dirname "$0"))"
 $CARGO run --manifest-path="$src_dir/Cargo.toml" -- generate "$@"
diff --git a/src/tools/rust-installer/make-tarballs.sh b/src/tools/rust-installer/make-tarballs.sh
index e342007da373..4aadf078ff1e 100755
--- a/src/tools/rust-installer/make-tarballs.sh
+++ b/src/tools/rust-installer/make-tarballs.sh
@@ -11,5 +11,7 @@ abs_path() {
     (unset CDPATH && cd "$path" > /dev/null && pwd)
 }
 
+export RUSTC_BOOTSTRAP=1
+
 src_dir="$(abs_path $(dirname "$0"))"
 $CARGO run --manifest-path="$src_dir/Cargo.toml" -- tarball "$@"