diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 24e93c7..9ad8afd 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -50,7 +50,7 @@ compile:
   cache:
     paths:
       - target/
-
+    key: rust-target-$TARGET
   artifacts:
     paths:
       - libsignal_jni-$TARGET.so
diff --git a/prepare-env.sh b/prepare-env.sh
index f626b1c..6e68c60 100755
--- a/prepare-env.sh
+++ b/prepare-env.sh
@@ -20,6 +20,9 @@ case "${TARGET}" in
     x86_64-unknown-linux-musl)
         apt-get install -yqq "${PACKAGES[@]}" musl-tools
     ;;
+    x86_64-unknown-linux-gnu)
+        apt-get install -yqq "${PACKAGES[@]}" binutils g++ gcc
+    ;;
     *)
         apt-get install -yqq "${PACKAGES[@]}"
     ;;