diff --git a/pkgs/development/compilers/crystal/default.nix b/pkgs/development/compilers/crystal/default.nix
index eb3551942af2..421c8011cc00 100644
--- a/pkgs/development/compilers/crystal/default.nix
+++ b/pkgs/development/compilers/crystal/default.nix
@@ -246,7 +246,13 @@ rec {
     binary = crystal_1_0;
   };
 
-  crystal = crystal_1_1;
+  crystal_1_2 = generic {
+    version = "1.2.0";
+    sha256 = "sha256-38mmsolzmCnv+MFUMc+AEiklDLBHIr/jqXMLzc0nVq4=";
+    binary = crystal_1_1;
+  };
+
+  crystal = crystal_1_2;
 
   crystal2nix = callPackage ./crystal2nix.nix { };
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 63a295e28856..94f563075222 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -11279,6 +11279,7 @@ with pkgs;
     crystal_0_36
     crystal_1_0
     crystal_1_1
+    crystal_1_2
     crystal;
 
   crystal2nix = callPackage ../development/compilers/crystal2nix { };