diff --git a/stratisd-modify/action.yml b/stratisd-modify/action.yml
index 870da1e..fb29386 100644
--- a/stratisd-modify/action.yml
+++ b/stratisd-modify/action.yml
@@ -18,13 +18,15 @@ runs:
         # Stratis project dependencies specified in Cargo.toml
         DEPENDENCIES=("devicemapper" "libblkid-rs" "libcryptsetup-rs-sys" "libcryptsetup-rs" "loopdev-3")
         REPOS=("devicemapper-rs" "libblkid-rs" "libcryptsetup-rs" "libcryptsetup-rs" "loopdev-3")
+        DEPENDENCY_TYPE=("" "" "" "" "--dev")
         TREE_ARGS=()
         for (( i=0; i<${#REPOS[@]}; i++ )); do
           dependency=${DEPENDENCIES[$i]}
           repo=${REPOS[$i]}
-          cargo add $dependency --git https://github.com/jbaublitz/$repo --branch $GITHUB_HEAD_REF
+          dependency_type=${DEPENDENCY_TYPE[$i]}
+          cargo add $dependency $dependency_type --git https://github.com/jbaublitz/$repo --branch $GITHUB_HEAD_REF
           jbaublitz=$?
-          cargo add $dependency --git https://github.com/mulkieran/$repo --branch $GITHUB_HEAD_REF
+          cargo add $dependency $dependency_type --git https://github.com/mulkieran/$repo --branch $GITHUB_HEAD_REF
           mulkieran=$?
           (( jbaublitz == 0 &&  mulkieran == 0)) && { echo "Duplicate $repo branches"; exit 1; }
           TREE_ARGS+=(--invert=$dependency)