diff --git a/Cargo.toml b/Cargo.toml
index 27697390..6fa7dfc3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -43,14 +43,14 @@ serde_json = "1.0"
 thiserror = "1.0"
 
 [dev-dependencies]
-criterion = "0.5"
-csv = "1"
-mock_instant = { version = "0.5" }
+criterion = "=0.5.1"
+csv = "=1.3.0"
+mock_instant = { version = "=0.5.1" }
 # By default, reqwest builds openssl from source, which fails on missing/incompatible system dependencies
-reqwest = { version = "0.11", features = ["rustls-tls"], default-features = false }
-futures = "0.3"
-tokio = { version = "1.24", features = ["rt-multi-thread"] }
-sha2 = "0.9"
+reqwest = { version = "=0.11.22", features = ["rustls-tls"], default-features = false }
+futures = "=0.3.31"
+tokio = { version = "=1.24.2", features = ["rt-multi-thread"] }
+sha2 = "=0.9.9"
 
 [lib]
 bench = false