diff --git a/test/Cargo.toml b/test/Cargo.toml
index b3c43926..963d4059 100644
--- a/test/Cargo.toml
+++ b/test/Cargo.toml
@@ -12,3 +12,4 @@ resolver = "2"
 [workspace.dependencies]
 chrono = { version = "*", features = ["serde"] }
 serde = { version = "*", features = ["derive"] }
+r2d2 = "*"
diff --git a/test/simple_table_mysql/Cargo.toml b/test/simple_table_mysql/Cargo.toml
index 80b4e9b2..1eeccd9a 100644
--- a/test/simple_table_mysql/Cargo.toml
+++ b/test/simple_table_mysql/Cargo.toml
@@ -12,6 +12,6 @@ diesel = { version = "*", default-features = false, features = [
     "r2d2",
     "chrono",
 ] }
-r2d2 = "*"
+r2d2.workspace = true
 chrono.workspace = true
 serde.workspace = true
diff --git a/test/simple_table_pg/Cargo.toml b/test/simple_table_pg/Cargo.toml
index 10016c97..d3ed3cfb 100644
--- a/test/simple_table_pg/Cargo.toml
+++ b/test/simple_table_pg/Cargo.toml
@@ -12,6 +12,6 @@ diesel = { version = "*", default-features = false, features = [
     "r2d2",
     "chrono",
 ] }
-r2d2 = "*"
+r2d2.workspace = true
 chrono.workspace = true
 serde.workspace = true
diff --git a/test/simple_table_sqlite/Cargo.toml b/test/simple_table_sqlite/Cargo.toml
index 992c8292..6f29b3cb 100644
--- a/test/simple_table_sqlite/Cargo.toml
+++ b/test/simple_table_sqlite/Cargo.toml
@@ -13,6 +13,6 @@ diesel = { version = "*", default-features = false, features = [
     "chrono",
     "returning_clauses_for_sqlite_3_35",
 ] }
-r2d2 = "*"
+r2d2.workspace = true
 chrono.workspace = true
 serde.workspace = true