diff --git a/nix/nim.nix b/nix/nim.nix
index 074d9ddce..0b9a14033 100644
--- a/nix/nim.nix
+++ b/nix/nim.nix
@@ -11,7 +11,7 @@ let
 in
 pkgs.fetchgit {
   url = entry.url;
-  rev = entry.vcsRevision;
+  rev = "v${entry.version}";
   sha256 = "1g4nxbwbc6h174gbpa3gcs47xwk6scbmiqlp0nq1ig3af8fcqcnj";
   fetchSubmodules = true;
 }
diff --git a/nix/nimble.nix b/nix/nimble.nix
index 4e36cd63d..218ae8216 100644
--- a/nix/nimble.nix
+++ b/nix/nimble.nix
@@ -9,7 +9,7 @@ let
 in
 pkgs.fetchgit {
   url = entry.url;
-  rev = entry.vcsRevision;
-  sha256 = "1q3mpv0b5a0hhvdfn2c1f03hjbdwfam894vym14i3dm23qin2i5z";
+  rev = "v${entry.version}";
+  sha256 = "18cwsjwcgjmnm42kr310hfbw06lym3vaj641i4pla6r8w22xqpqd";
   fetchSubmodules = true;
 }