diff --git a/.github/workflows/install.sh b/.github/workflows/install.sh
index b05903280..6bcda1d4b 100755
--- a/.github/workflows/install.sh
+++ b/.github/workflows/install.sh
@@ -25,6 +25,12 @@ if [ "${flavor}" = "testing" ]; then
     --extras=restapi \
     --extras=sql
 
+  # FIXME: Remove this again.
+  # Fix dependency woes about percy: AttributeError: module 'percy' has no attribute 'Runner'.
+  # https://github.com/earthobservations/wetterdienst/pull/1017#issuecomment-1741240635
+  # pytest tests/ui/explorer/test_explorer.py -k test_app_layout
+  poetry run -- pip install 'percy>=2,<3' --force
+
 elif [ "${flavor}" = "docs" ]; then
   poetry install --verbose --no-interaction --with=docs --extras=interpolation
 
diff --git a/poetry.lock b/poetry.lock
index bf3346293..ee8504cd6 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -4005,13 +4005,13 @@ requests = ">=2.14.0"
 
 [[package]]
 name = "percy-selenium"
-version = "2.0.0"
+version = "1.1.0"
 description = "Python client for visual testing with Percy"
 optional = false
 python-versions = ">=3.6"
 files = [
-    {file = "percy-selenium-2.0.0.tar.gz", hash = "sha256:369107b106f0404504e12cc713f0d17f04eea886034d4733b489d6d011b4db65"},
-    {file = "percy_selenium-2.0.0-py3-none-any.whl", hash = "sha256:ea4be0ac9feafe250b553422db66c88b218da55f922928a13856ed699dafedf2"},
+    {file = "percy-selenium-1.1.0.tar.gz", hash = "sha256:3995c719458d537df469fdd1ac8b1168f37fdb98b0fd8d566a945aaecc8c4cbf"},
+    {file = "percy_selenium-1.1.0-py3-none-any.whl", hash = "sha256:7f6628d114266281f7115db65c93c575a9ffd639654afddcd59f748c44b472fa"},
 ]
 
 [package.dependencies]
@@ -6948,4 +6948,4 @@ streamlit = ["streamlit"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.9,!=3.9.7,<3.12"
-content-hash = "02a43a071e4bcc6e33a101c1a7e3fb9f9942240504d173c3e61f017d682eace5"
+content-hash = "3b71f630daf5edca7d51c2bccfb6328e0243f8b83fae644ae7f754ac97c5aad2"
diff --git a/pyproject.toml b/pyproject.toml
index 2f9e02cff..3fa7e70df 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -185,8 +185,7 @@ ipykernel = ">=6.19.4,<7"
 jsonschema = { version = ">=4.17.3,<5", extras = ["format-nongpl"] }
 jupyter = ">=1,<2"
 lmfit = "^1.1.0"  # required for example observations_station_gaussian_model.py
-percy = ">=2,<3"
-percy-selenium = ">=2,<3"
+percy-selenium = "<2"
 pybufrkit = ">=0.2,<0.3"
 pytest = ">=7.2,<8"
 pytest-cov = ">=4,<5"