diff --git a/libticker/Cargo.toml b/libticker/Cargo.toml
index 666485d..48a07f8 100644
--- a/libticker/Cargo.toml
+++ b/libticker/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2018"
 license = "AGPL-3.0-or-later"
 
 [dependencies]
-diesel = { version = "~1", features = ["postgres", "chrono"] }
-chrono = "~0.4"
-serde = { version = "~1.0", features = ["derive"] }
-serde_yaml = "~0.8"
+diesel = { version = "1", features = ["postgres", "chrono"] }
+chrono = "0.4"
+serde = { version = "1", features = ["derive"] }
+serde_yaml = "0.9"