diff --git a/bump-version.sh b/bump-version.sh
index 2e76bb8..c47fa25 100755
--- a/bump-version.sh
+++ b/bump-version.sh
@@ -18,8 +18,11 @@ to=$2
 grep "^version = \"$from\"" "$crate_name/Cargo.toml" > /dev/null || (echo "Wrong version: $from" && exit 1)
 
 # update package versions
-sed -e "s/^version = \"$from\"/version = \"$to\"/" "$crate_name/Cargo.toml" -i
-sed -e "s/^version = \"$from\"/version = \"$to\"/" "${crate_name}_derive/Cargo.toml" -i
+sed -i.bak -e "s/^version = \"$from\"/version = \"$to\"/" "$crate_name/Cargo.toml"
+sed -i.bak -e "s/^version = \"$from\"/version = \"$to\"/" "${crate_name}_derive/Cargo.toml"
 
 # update main crate's dev dependency on derive crate (if any)
-sed -e "s/\(${crate_name}_derive.*version\) = \"$from\"/\1 = \"$to\"/" "$crate_name/Cargo.toml" -i
+sed -i.bak -e "s/\(${crate_name}_derive.*version\) = \"$from\"/\1 = \"$to\"/" "$crate_name/Cargo.toml" -i
+
+rm "$crate_name/Cargo.toml.bak"
+rm "${crate_name}_derive/Cargo.toml.bak"
diff --git a/tree_hash/Cargo.toml b/tree_hash/Cargo.toml
index 76e9566..ea2dea3 100644
--- a/tree_hash/Cargo.toml
+++ b/tree_hash/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tree_hash"
-version = "1.0.0-beta.0"
+version = "0.5.0"
 edition = "2021"
 description = "Efficient Merkle-hashing as used in Ethereum consensus"
 license = "Apache-2.0"
@@ -17,7 +17,7 @@ smallvec = "1.6.1"
 
 [dev-dependencies]
 rand = "0.8.5"
-tree_hash_derive = { path = "../tree_hash_derive", version = "1.0.0-beta.0" }
+tree_hash_derive = { path = "../tree_hash_derive", version = "0.5.0" }
 ethereum_ssz = "1.0.0-beta.2"
 ethereum_ssz_derive = "1.0.0-beta.2"
 
diff --git a/tree_hash_derive/Cargo.toml b/tree_hash_derive/Cargo.toml
index fea4dd2..8695996 100644
--- a/tree_hash_derive/Cargo.toml
+++ b/tree_hash_derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tree_hash_derive"
-version = "1.0.0-beta.0"
+version = "0.5.0"
 edition = "2021"
 description = "Procedural derive macros to accompany the tree_hash crate"
 license = "Apache-2.0"