diff --git a/satrs-core/Cargo.toml b/satrs-core/Cargo.toml
index 55500bc..9d5d01e 100644
--- a/satrs-core/Cargo.toml
+++ b/satrs-core/Cargo.toml
@@ -13,12 +13,12 @@ categories = ["aerospace", "aerospace::space-protocols", "no-std", "hardware-sup
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-delegate = ">=0.8, <0.11"
+delegate = ">0.7, <=0.10"
 paste = "1"
 embed-doc-image = "0.1"
 
 [dependencies.num_enum]
-version = "0.7"
+version = ">0.5, <=0.7"
 default-features = false
 
 [dependencies.dyn-clone]
@@ -70,7 +70,7 @@ default-features = false
 
 [dev-dependencies]
 serde = "1"
-zerocopy = "0.7"
+zerocopy = ">0.5, <=0.7"
 once_cell = "1.13"
 serde_json = "1"