diff --git a/lib/igniter/project/deps.ex b/lib/igniter/project/deps.ex
index f5009d9..288f33b 100644
--- a/lib/igniter/project/deps.ex
+++ b/lib/igniter/project/deps.ex
@@ -312,7 +312,8 @@ defmodule Igniter.Project.Deps do
 
           "github:" <> requirement ->
             if String.contains?(requirement, "@") do
-              case String.split(requirement, ["/", "@"], trim: true) do
+              # adding parts will allow for branch names with forward slashes
+              case String.split(requirement, ["/", "@"], trim: true, parts: 3) do
                 [org, project, ref] ->
                   [github: "#{org}/#{project}", ref: ref, override: true]
 
diff --git a/lib/mix/tasks/igniter.install.ex b/lib/mix/tasks/igniter.install.ex
index 4aba3cf..c9949b1 100644
--- a/lib/mix/tasks/igniter.install.ex
+++ b/lib/mix/tasks/igniter.install.ex
@@ -13,8 +13,10 @@ defmodule Mix.Tasks.Igniter.Install do
   * `package@version` - The package will be installed at the specified version.
      If the version given is generic, like `3.0`, it will be pinned as described above.
      if it is specific, like `3.0.1`, it will be pinned at that *exact* version with `==`.
-  * `package@git:git_url` - The package will be installed from the specified git url.
-  * `package@github:project/repo` - The package will be installed from the specified github repo.
+  * `package@git:https://project/repo.git@git_ref` - The package will be installed from the
+     specified git url and `ref` option will be set to `git_ref`. `ref` can be a branch, tag or commit SHA.
+  * `package@github:project/repo@git_ref` - The package will be installed from the specified
+     github repo and `ref` option will be set to `git_ref`. `ref` can be a branch, tag or commit SHA.
   * `package@path:path/to/dep` - The package will be installed from the specified path.
 
   ## Switches
diff --git a/test/igniter/project/deps_test.exs b/test/igniter/project/deps_test.exs
index f6c8808..0aa74ce 100644
--- a/test/igniter/project/deps_test.exs
+++ b/test/igniter/project/deps_test.exs
@@ -43,4 +43,39 @@ defmodule Igniter.Project.DepsTest do
       """)
     end
   end
+
+  describe "determine_dep_type_and_version" do
+    test "package" do
+      {package, version_info} = Igniter.Project.Deps.determine_dep_type_and_version("ash")
+      assert package == :ash
+      assert String.contains?(version_info, "~>") == true
+    end
+
+    test "package@version" do
+      assert Igniter.Project.Deps.determine_dep_type_and_version("ash@2") == {:ash, "~> 2.0"}
+    end
+
+    test "package@git" do
+      assert Igniter.Project.Deps.determine_dep_type_and_version(
+               "package@git:https://project/repo.git@git_ref"
+             ) == {:package, [git: "https://project/repo.git", ref: "git_ref", override: true]}
+    end
+
+    test "package@github" do
+      assert Igniter.Project.Deps.determine_dep_type_and_version(
+               "package@github:project/repo@git_ref"
+             ) == {:package, [github: "project/repo", ref: "git_ref", override: true]}
+
+      assert Igniter.Project.Deps.determine_dep_type_and_version(
+               "package@github:project/repo@git/ref/with/slashes/work"
+             ) ==
+               {:package,
+                [github: "project/repo", ref: "git/ref/with/slashes/work", override: true]}
+    end
+
+    test "package@path" do
+      assert Igniter.Project.Deps.determine_dep_type_and_version("package@path:path/to/dep") ==
+               {:package, [path: "path/to/dep", override: true]}
+    end
+  end
 end