diff --git a/sci-mathematics/easycrypt/Manifest b/sci-mathematics/easycrypt/Manifest
index 2b7a72d090bd..fd42b2735784 100644
--- a/sci-mathematics/easycrypt/Manifest
+++ b/sci-mathematics/easycrypt/Manifest
@@ -1 +1,2 @@
 DIST easycrypt-2025.10.gh.tar.gz 1388382 BLAKE2B c49d8b60dfb3248d1291d14841f79373be50c2ee77848afc49f09eb02a97bde2203208d7567d1cff971e86e16e74d169b1bc88aeee7053c7ba16497e999113c4 SHA512 d1136aa0e2a389ff38b665bc729e070de6f8e8970eeac1b92a4ad9afc1f03d2d2464ac224fec2e3fef4745906b41e2f3a8d48937545c51949c76dbaf471acb08
+DIST easycrypt-2025.11.gh.tar.gz 1434098 BLAKE2B dad0b25c40499b81acdf68025c7cc70ee34a5e407a3b4d25807b6684b153d18dfc60f8871dda2efded01435d049e9a228d1fe33f8540e6c9bdb6ad9d020dc137 SHA512 18eafb0d0934009fcfa1bfafeb6d69660b708dbc3c0bce9ef73543763367b7fea7e00e452dec7b517dffb5f65420643f7a1ee6d84729f10758cb19d93af70948
diff --git a/sci-mathematics/easycrypt/easycrypt-2025.11.ebuild b/sci-mathematics/easycrypt/easycrypt-2025.11.ebuild
new file mode 100644
index 000000000000..cdf0ba3d7b07
--- /dev/null
+++ b/sci-mathematics/easycrypt/easycrypt-2025.11.ebuild
@@ -0,0 +1,51 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit dune
+
+DESCRIPTION="Computer-Aided Cryptographic Proofs"
+HOMEPAGE="https://github.com/EasyCrypt/easycrypt/"
+
+if [[ "${PV}" == *9999* ]] ; then
+	inherit git-r3
+
+	EGIT_REPO_URI="https://github.com/EasyCrypt/${PN}"
+else
+	SRC_URI="https://github.com/EasyCrypt/${PN}/archive/r${PV}.tar.gz
+		-> ${P}.gh.tar.gz"
+	S="${WORKDIR}/${PN}-r${PV}"
+
+	KEYWORDS="~amd64"
+fi
+
+LICENSE="MIT"
+SLOT="0/${PV}"
+IUSE="+ocamlopt"
+
+RDEPEND="
+	>=sci-mathematics/why3-1.8.0:=
+
+	dev-ml/batteries:=
+	dev-ml/camlp-streams:=
+	dev-ml/camlzip:=
+	dev-ml/dune-build-info:=
+	dev-ml/dune-site:=
+	dev-ml/num:=
+	dev-ml/ocaml-inifiles:=
+	dev-ml/pcre2-ocaml:=
+	dev-ml/yojson:=
+	dev-ml/zarith:=
+"
+DEPEND="
+	${RDEPEND}
+"
+
+src_prepare() {
+	local theories="[\"$(ocamlc -where)/easycrypt/theories\"]"
+	sed -i "s|EcRelocate\.Sites\.theories|${theories}|g" ./src/ec.ml \
+		|| die "failed to update theories"
+
+	default
+}