diff --git a/dev-libs/asmjit/asmjit-2025.06.28.ebuild b/dev-libs/asmjit/asmjit-2025.06.28-r1.ebuild
similarity index 85%
rename from dev-libs/asmjit/asmjit-2025.06.28.ebuild
rename to dev-libs/asmjit/asmjit-2025.06.28-r1.ebuild
index 07f7d7bdc5d6a..3971291d423c5 100644
--- a/dev-libs/asmjit/asmjit-2025.06.28.ebuild
+++ b/dev-libs/asmjit/asmjit-2025.06.28-r1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 2022-2025 Gentoo Authors
+# Copyright 2022-2026 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -17,7 +17,8 @@ else
 fi
 
 LICENSE="ZLIB"
-SLOT="0"
+# NOTE: subslot is last commit marked with [abi] in git
+SLOT="0/2025.06.16"
 IUSE="test"
 
 BDEPEND="test? ( dev-cpp/gtest )"
diff --git a/dev-libs/asmjit/asmjit-9999.ebuild b/dev-libs/asmjit/asmjit-9999.ebuild
index 8c44bb7823a97..d4a0b46c0935e 100644
--- a/dev-libs/asmjit/asmjit-9999.ebuild
+++ b/dev-libs/asmjit/asmjit-9999.ebuild
@@ -1,4 +1,4 @@
-# Copyright 2022-2025 Gentoo Authors
+# Copyright 2022-2026 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -17,7 +17,8 @@ else
 fi
 
 LICENSE="ZLIB"
-SLOT="0"
+# NOTE: subslot is last commit marked with [abi] in git
+SLOT="0/9999"
 IUSE="test"
 
 BDEPEND="test? ( dev-cpp/gtest )"