diff --git a/ci/valgrind-check/Cargo.toml b/ci/valgrind-check/Cargo.toml
index 79caf6aac..8f239ee97 100644
--- a/ci/valgrind-check/Cargo.toml
+++ b/ci/valgrind-check/Cargo.toml
@@ -22,8 +22,8 @@ categories = ["network-programming"]
 description = "Internal crate for zenoh."
 
 [dependencies]
-base64ct = "~1.6.0"
-zerofrom = "~0.1.5"
+base64ct = "=1.6.0"
+zerofrom = "=0.1.5"
 tokio = { version = "1.35.1", features = ["rt-multi-thread", "time", "io-std"] }
 zenoh = { path = "../../zenoh/" }
 zenoh-runtime = { path = "../../commons/zenoh-runtime/" }