diff --git a/gemset.nix b/gemset.nix
new file mode 100644
index 0000000..7d2de1c
--- /dev/null
+++ b/gemset.nix
@@ -0,0 +1,95 @@
+{
+  blockfrost-ruby = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      path = ./.;
+      type = "path";
+    };
+    version = "0.1.0";
+  };
+  diff-lcs = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0rwvjahnp7cpmracd8x732rjgnilqv2sx7d1gfrysslc3h039fa9";
+      type = "gem";
+    };
+    version = "1.5.0";
+  };
+  dotenv = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1n0pi8x8ql5h1mijvm8lgn6bhq4xjb5a500p5r1krq4s6j9lg565";
+      type = "gem";
+    };
+    version = "2.8.1";
+  };
+  rake = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "15whn7p9nrkxangbs9hh75q585yfn66lv0v2mhj6q6dl6x8bzr2w";
+      type = "gem";
+    };
+    version = "13.0.6";
+  };
+  rspec = {
+    dependencies = ["rspec-core" "rspec-expectations" "rspec-mocks"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "171rc90vcgjl8p1bdrqa92ymrj8a87qf6w20x05xq29mljcigi6c";
+      type = "gem";
+    };
+    version = "3.12.0";
+  };
+  rspec-core = {
+    dependencies = ["rspec-support"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1ibb81slc35q5yp276sixp3yrvj9q92wlmi1glbnwlk6g49z8rn4";
+      type = "gem";
+    };
+    version = "3.12.0";
+  };
+  rspec-expectations = {
+    dependencies = ["diff-lcs" "rspec-support"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0qldsmjhqr4344zdlamzggr3y98wdk2c4hihkhwx8imk800gkl8v";
+      type = "gem";
+    };
+    version = "3.12.0";
+  };
+  rspec-mocks = {
+    dependencies = ["diff-lcs" "rspec-support"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1yvwnb0x5d6d4ff3wlgahk0wcw72ic51gd2snr1xxc5ify41kabv";
+      type = "gem";
+    };
+    version = "3.12.0";
+  };
+  rspec-support = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "12y52zwwb3xr7h91dy9k3ndmyyhr3mjcayk0nnarnrzz8yr48kfx";
+      type = "gem";
+    };
+    version = "3.12.0";
+  };
+}
diff --git a/shell.nix b/shell.nix
index e387bb1..ea88784 100644
--- a/shell.nix
+++ b/shell.nix
@@ -8,5 +8,5 @@ let
   };
 in stdenv.mkDerivation {
   name = "blockfrost-ruby";
-  buildInputs = [ env ruby nodejs ];
+  buildInputs = [ env ruby nodejs git rubyPackages_3_1.rake rubyPackages_3_1.rspec ];
 }