diff --git a/crates/fluke-maybe-uring/Cargo.toml b/crates/fluke-maybe-uring/Cargo.toml
index e08f8994..066e0757 100644
--- a/crates/fluke-maybe-uring/Cargo.toml
+++ b/crates/fluke-maybe-uring/Cargo.toml
@@ -9,6 +9,7 @@ readme = "README.md"
 description = """
 Replicates some tokio-uring types to allow building code without it
 """
+rust-version = "1.75.0"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
diff --git a/crates/fluke/Cargo.toml b/crates/fluke/Cargo.toml
index c4b234ad..e8f6fa46 100644
--- a/crates/fluke/Cargo.toml
+++ b/crates/fluke/Cargo.toml
@@ -9,6 +9,7 @@ readme = "README.md"
 description = """
 An HTTP implementation on top of io_uring
 """
+rust-version = "1.75"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html