diff --git a/poetry.lock b/poetry.lock
index f7cb389fe..8887d80f1 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1549,14 +1549,14 @@ files = [
 
 [[package]]
 name = "mongo-charms-single-kernel"
-version = "1.8.22"
+version = "1.8.7"
 description = "Shared and reusable code for Mongo-related charms"
 optional = false
 python-versions = "<4.0,>=3.10"
 groups = ["main", "integration"]
 files = [
-    {file = "mongo_charms_single_kernel-1.8.22-py3-none-any.whl", hash = "sha256:3d2e381dead393496c9489775afcf37ab63e917916c0a204bac01b47b47c0523"},
-    {file = "mongo_charms_single_kernel-1.8.22.tar.gz", hash = "sha256:d1d05842dd69b9e96e6fa58405b5e39e72a7faf82baac38ab3143bbb8732e3bb"},
+    {file = "mongo_charms_single_kernel-1.8.7-py3-none-any.whl", hash = "sha256:650e25b941899ceb82b9cbf5b923d8de87b536e64702beaaeb3b80ffa06bcff0"},
+    {file = "mongo_charms_single_kernel-1.8.7.tar.gz", hash = "sha256:823dff2a6fa89031814bcdef1145ac827f145ff4c02f0201813234bc80103d4c"},
 ]
 
 [package.dependencies]
@@ -3201,4 +3201,4 @@ type = ["pytest-mypy"]
 [metadata]
 lock-version = "2.1"
 python-versions = "^3.12.0"
-content-hash = "eedec1377d4684a0c9d4e59512676fea89bb9ebfbfd87647bda54bcae6dbe2ba"
+content-hash = "08c05fd2403bcc6f8f3ae3e4122174a63fa413ebb48570ffb090da5282d6d5e3"
diff --git a/pyproject.toml b/pyproject.toml
index e7b9668ea..e224b3744 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ rpds-py = "0.18.0"
 pyOpenSSL = "^24.2.1"
 charm-refresh = "^3.1.0.3"
 lightkube = "^0.15.3"
-mongo-charms-single-kernel = "v1.8.22"
+mongo-charms-single-kernel = "1.8.7"
 
 [tool.poetry.group.charm-libs.dependencies]
 ops = ">=2.21"
@@ -66,7 +66,7 @@ pytest-operator = "^0.36.0"
 pytest-operator-groups = {git = "https://github.com/canonical/data-platform-workflows", tag = "v35.0.4", subdirectory = "python/pytest_plugins/pytest_operator_groups"}
 pytest-github-secrets = {git = "https://github.com/canonical/data-platform-workflows", tag = "v35.0.4", subdirectory = "python/pytest_plugins/github_secrets"}
 allure-pytest-collection-report = {git = "https://github.com/canonical/data-platform-workflows", tag = "v35.0.4", subdirectory = "python/pytest_plugins/allure_pytest_collection_report"}
-mongo-charms-single-kernel = "v1.8.22"
+mongo-charms-single-kernel = "1.8.7"
 
 [tool.poetry.group.build-refresh-version]
 optional = true