diff --git a/crates/libcruby-sys/prepackage.sh b/crates/libcruby-sys/prepackage.sh
index c6e785b..a06d81e 100755
--- a/crates/libcruby-sys/prepackage.sh
+++ b/crates/libcruby-sys/prepackage.sh
@@ -1,5 +1,8 @@
 #!/bin/bash
 
+set -e
+set -x
+
 pushd ../../ruby
 bundle install
 bundle exec rake native_lib_files
diff --git a/scripts/provision.sh b/scripts/provision.sh
index 8c1d693..6175f01 100644
--- a/scripts/provision.sh
+++ b/scripts/provision.sh
@@ -6,6 +6,7 @@ sudo apt-get install mingw-w64 -y
 curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain nightly -y
 source $HOME/.cargo/env
 
+gpg2 --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
 \curl -sSL https://get.rvm.io | bash -s stable --ruby
 source $HOME/.rvm/scripts/rvm