diff --git a/pkgs/applications/editors/emacs/elisp-packages/manual-packages/cask/0000-cask-lispdir.diff b/pkgs/applications/editors/emacs/elisp-packages/manual-packages/cask/0000-cask-lispdir.diff
index 2819a462d64c..7737594179ec 100644
--- a/pkgs/applications/editors/emacs/elisp-packages/manual-packages/cask/0000-cask-lispdir.diff
+++ b/pkgs/applications/editors/emacs/elisp-packages/manual-packages/cask/0000-cask-lispdir.diff
@@ -1,23 +1,42 @@
-diff -Naur cask-source-0.8.8-old/bin/cask cask-source-0.8.8/bin/cask
---- cask-source-0.8.8-old/bin/cask	1969-12-31 21:00:01.000000000 -0300
-+++ cask-source-0.8.8/bin/cask	2024-08-30 18:34:48.986474121 -0300
-@@ -37,19 +37,6 @@
+diff -Naur cask-source-0.9.0-old/bin/cask cask-source-0.9.0-new/bin/cask
+--- cask-source-0.9.0-old/bin/cask	1969-12-31 21:00:01.000000000 -0300
++++ cask-source-0.9.0-new/bin/cask	2024-09-02 12:46:48.316364621 -0300
+@@ -21,8 +21,6 @@
+ set -euo pipefail
+ CASK=$0
+ EMACS=${CASK_EMACS:-${EMACS:-emacs}}
+-READLINK=${READLINK:-readlink}
+-GREADLINK=${GREADLINK:-greadlink}
+ 
+ if [ "$#" -eq "0" ] ; then
+ 	subcommand=install
+@@ -31,21 +29,10 @@
+ 	shift
+ fi
+ 
+-set +eu
+-SRCDIR__=$($READLINK -f "$CASK" 2>/dev/null)
+-if [ -z "$SRCDIR__" ] ; then
+-    SRCDIR__=$($GREADLINK -f "$CASK" 2>/dev/null)
+-fi
+-set -eu
+-if [ -z "$SRCDIR__" ]; then
+-    SRCDIR__=$(python -c "import os, sys; print(os.path.realpath(sys.argv[1]))" "$CASK")
+-fi
+-SRCDIR_=$(dirname "$SRCDIR__")
+-SRCDIR=$(dirname "$SRCDIR_")
+ case $subcommand in
+ 	emacs)
+ 		EMACS="$EMACS" \
+-                "$EMACS" -Q -L "$SRCDIR" -l "$SRCDIR/cask" \
++                "$EMACS" -Q -L "@lispdir@" -l "@lispdir@/cask" \
+                 --eval "(cask--initialize (expand-file-name default-directory))" \
+                 "$@"
+ 		;;
+@@ -53,6 +40,6 @@
  		EMACSLOADPATH="$($CASK load-path)" PATH="$($CASK path)" EMACS="$EMACS" "$@"
  		;;
  	*)
--		WHICH=${WHICH:-which}
--		READLINK=$($WHICH readlink || true)
--		if [ "$(uname || true)" == "Darwin" ] ; then
--			READLINK=
--		fi
--		READLINK=${READLINK:-$($WHICH greadlink || true)}
--		if [ ! -z "$READLINK" ] ; then
--			SRCDIR__=$($READLINK -f "$CASK")
--		else
--			SRCDIR__=$(python -c "import os, sys; print(os.path.realpath(sys.argv[1]))" "$CASK")
--		fi
--		SRCDIR_=$(dirname "$SRCDIR__")
--		SRCDIR=$(dirname "$SRCDIR_")
 -		"$EMACS" -Q --script "$SRCDIR/cask-cli.el" -- $subcommand "$@"
 +		"$EMACS" -Q --script "@lispdir@/cask-cli.el" -- $subcommand "$@"
  		;;
diff --git a/pkgs/applications/editors/emacs/elisp-packages/manual-packages/cask/package.nix b/pkgs/applications/editors/emacs/elisp-packages/manual-packages/cask/package.nix
index 5ede94094ff3..4334fce6ecbb 100644
--- a/pkgs/applications/editors/emacs/elisp-packages/manual-packages/cask/package.nix
+++ b/pkgs/applications/editors/emacs/elisp-packages/manual-packages/cask/package.nix
@@ -1,34 +1,31 @@
 {
   lib,
   ansi,
-  coreutils,
-  dash,
-  ecukes,
-  el-mock,
-  ert-async,
-  ert-runner,
+  cl-generic,
+  cl-lib,
+  commander,
+
+  epl,
   f,
   fetchFromGitHub,
   git,
   gitUpdater,
   melpaBuild,
-  noflet,
   package-build,
   s,
-  servant,
-  shell-split-string,
+  shut-up,
 }:
 
 melpaBuild (finalAttrs: {
   pname = "cask";
-  version = "0.8.8";
+  version = "0.9.0";
 
   src = fetchFromGitHub {
     name = "cask-source-${finalAttrs.version}";
     owner = "cask";
     repo = "cask";
     rev = "v${finalAttrs.version}";
-    hash = "sha256-TlReq5sLVJj+pXmJSnepKQkNEWVhnh30iq4egM1HJMU=";
+    hash = "sha256-91rJFsp2SLk/JY+v6G5JmXH5bg9QnT+qhI8ccNJlI4A=";
   };
 
   patches = [
@@ -38,29 +35,28 @@ melpaBuild (finalAttrs: {
 
   packageRequires = [
     ansi
-    dash
-    ecukes
-    el-mock
-    ert-async
-    ert-runner
+    cl-generic
+    cl-lib
+    commander
+    epl
     f
     git
-    noflet
     package-build
     s
-    servant
-    shell-split-string
+    shut-up
   ];
 
   ignoreCompilationError = false;
 
   strictDeps = true;
 
+  # use melpaVersion so that it works for unstable releases too
   postPatch = ''
-    lispdir=$out/share/emacs/site-lisp/elpa/cask-${finalAttrs.version} \
+    lispdir=$out/share/emacs/site-lisp/elpa/cask-${finalAttrs.melpaVersion} \
       substituteAllInPlace bin/cask
   '';
 
+  # TODO: use installBin as soon as installBin arrives Master branch
   postInstall = ''
     install -D -t $out/bin bin/cask
   '';