diff --git a/pkgs/development/compilers/chicken/5/eggs.nix b/pkgs/development/compilers/chicken/5/eggs.nix
index abbcbcfb64ae..8763941e3ff3 100644
--- a/pkgs/development/compilers/chicken/5/eggs.nix
+++ b/pkgs/development/compilers/chicken/5/eggs.nix
@@ -241,6 +241,20 @@ rec {
     ];
   };
 
+  sha2 = eggDerivation {
+    name = "sha2-4.0.5";
+
+    src = fetchegg {
+      name = "sha2";
+      version = "4.0.5";
+      sha256 = "020yc41gkpg2s48v5n1nnq02dii340yly2y1zsi71bbfbkai2vcs";
+    };
+
+    buildInputs = [
+      message-digest-primitive
+    ];
+  };
+
   spiffy = eggDerivation {
     name = "spiffy-6.3";
 
diff --git a/pkgs/development/compilers/chicken/5/eggs.scm b/pkgs/development/compilers/chicken/5/eggs.scm
index 807edc303446..fc2db3770a86 100644
--- a/pkgs/development/compilers/chicken/5/eggs.scm
+++ b/pkgs/development/compilers/chicken/5/eggs.scm
@@ -4,6 +4,7 @@ matchable
 apropos
 spiffy
 json
+sha2
 
 ;; other eggs to include in nixpkgs
 srfi-189