diff --git a/mix.exs b/mix.exs
index a486913f..e5039d0f 100644
--- a/mix.exs
+++ b/mix.exs
@@ -38,11 +38,11 @@ defmodule LangChain.MixProject do
     [
       {:ecto, "~> 3.10 or ~> 3.11"},
       {:gettext, "~> 0.20"},
-      {:req, ">= 0.5.2"},
-      {:abacus, "~> 2.1.0", optional: true},
-      {:nx, ">= 0.7.0", optional: true},
-      {:ex_doc, "~> 0.34", only: :dev, runtime: false},
-      {:mimic, "~> 1.8", only: :test}
+      {:req, "0.5.2"},
+      {:abacus, "2.1.0", optional: true},
+      {:nx, "0.7.3", optional: true},
+      {:ex_doc, "0.34.1", only: :dev, runtime: false},
+      {:mimic, "1.8.2", only: :test}
     ]
   end