diff --git a/compiler-cli/src/add.rs b/compiler-cli/src/add.rs
index e999ab481fc..69dea7d2e73 100644
--- a/compiler-cli/src/add.rs
+++ b/compiler-cli/src/add.rs
@@ -1,6 +1,7 @@
 use camino::{Utf8Path, Utf8PathBuf};
 
 use gleam_core::{
+    build::Mode,
     error::{FileIoAction, FileKind},
     Error, Result,
 };
@@ -27,8 +28,9 @@ pub fn command(packages_to_add: Vec<String>, dev: bool) -> Result<()> {
         Some((new_package_requirements.clone(), dev)),
         Vec::new(),
         dependencies::DependencyManagerConfig {
+            mode: Mode::Dev,
             use_manifest: dependencies::UseManifest::Yes,
-            ..Default::default()
+            check_major_versions: dependencies::CheckMajorVersions::No,
         },
     )?;
 
diff --git a/compiler-cli/src/build.rs b/compiler-cli/src/build.rs
index 82584b095b7..9fac36c1c18 100644
--- a/compiler-cli/src/build.rs
+++ b/compiler-cli/src/build.rs
@@ -1,7 +1,7 @@
 use std::{rc::Rc, time::Instant};
 
 use gleam_core::{
-    build::{Built, Codegen, NullTelemetry, Options, ProjectCompiler, Telemetry},
+    build::{Built, Codegen, Mode, NullTelemetry, Options, ProjectCompiler, Telemetry},
     manifest::Manifest,
     paths::ProjectPaths,
     warning::WarningEmitterIO,
@@ -22,8 +22,9 @@ pub fn download_dependencies(telemetry: impl Telemetry) -> Result<Manifest> {
         None,
         Vec::new(),
         dependencies::DependencyManagerConfig {
+            mode: Mode::Dev,
             use_manifest: dependencies::UseManifest::Yes,
-            ..Default::default()
+            check_major_versions: dependencies::CheckMajorVersions::No,
         },
     )
 }
diff --git a/compiler-cli/src/dependencies.rs b/compiler-cli/src/dependencies.rs
index 59ccb459fb1..2cb949f1f22 100644
--- a/compiler-cli/src/dependencies.rs
+++ b/compiler-cli/src/dependencies.rs
@@ -51,8 +51,9 @@ pub fn list() -> Result<()> {
     let paths = ProjectPaths::new(project);
     let config = crate::config::root_config()?;
     let dependency_manager = DependencyManagerConfig {
+        mode: Mode::Dev,
         use_manifest: UseManifest::Yes,
-        ..Default::default()
+        check_major_versions: CheckMajorVersions::No,
     }
     .into_dependency_manager(
         runtime.handle().clone(),
@@ -95,9 +96,9 @@ pub fn update(packages: Vec<String>) -> Result<()> {
         None,
         packages.into_iter().map(EcoString::from).collect(),
         DependencyManagerConfig {
+            mode: Mode::Dev,
             use_manifest,
             check_major_versions: CheckMajorVersions::Yes,
-            ..Default::default()
         },
     )?;
 
@@ -500,16 +501,6 @@ pub struct DependencyManagerConfig {
     pub check_major_versions: CheckMajorVersions,
 }
 
-impl Default for DependencyManagerConfig {
-    fn default() -> Self {
-        Self {
-            mode: Mode::Dev,
-            use_manifest: UseManifest::No,
-            check_major_versions: CheckMajorVersions::No,
-        }
-    }
-}
-
 impl DependencyManagerConfig {
     pub fn into_dependency_manager<Telem: Telemetry, P: dependency::PackageFetcher>(
         self,
diff --git a/compiler-cli/src/fs.rs b/compiler-cli/src/fs.rs
index c1fcd9dd13a..471c7a0a8db 100644
--- a/compiler-cli/src/fs.rs
+++ b/compiler-cli/src/fs.rs
@@ -1,5 +1,5 @@
 use gleam_core::{
-    build::{NullTelemetry, Target},
+    build::{Mode, NullTelemetry, Target},
     error::{parse_os, Error, FileIoAction, FileKind, OS},
     io::{
         BeamCompiler, CommandExecutor, Content, DirEntry, FileSystemReader, FileSystemWriter,
@@ -252,8 +252,9 @@ impl DownloadDependencies for ProjectIO {
             None,
             Vec::new(),
             dependencies::DependencyManagerConfig {
+                mode: Mode::Dev,
                 use_manifest: dependencies::UseManifest::Yes,
-                ..Default::default()
+                check_major_versions: dependencies::CheckMajorVersions::No,
             },
         )
     }
diff --git a/compiler-cli/src/main.rs b/compiler-cli/src/main.rs
index 97c9c0ca6bc..a08a7a10a8f 100644
--- a/compiler-cli/src/main.rs
+++ b/compiler-cli/src/main.rs
@@ -643,9 +643,9 @@ fn download_dependencies() -> Result<()> {
         None,
         Vec::new(),
         dependencies::DependencyManagerConfig {
+            mode: Mode::Dev,
             use_manifest: dependencies::UseManifest::Yes,
-            check_major_versions: dependencies::CheckMajorVersions::Yes,
-            ..Default::default()
+            check_major_versions: dependencies::CheckMajorVersions::No,
         },
     )?;
     Ok(())