diff --git a/Dockerfile b/Dockerfile
index c959333..410ab6e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,8 +13,9 @@ WORKDIR /app
 
 # Option B: build from source (current repo)
 COPY pyproject.toml README.md LICENSE /app/
+COPY constraints.txt /app/
 COPY src /app/src
-RUN pip install --no-cache-dir .
+RUN pip install --no-cache-dir -c /app/constraints.txt .
 
 # Default entrypoint: environment-driven bootstrap
 ENTRYPOINT ["matomo-bootstrap"]
diff --git a/constraints.txt b/constraints.txt
new file mode 100644
index 0000000..587c56a
--- /dev/null
+++ b/constraints.txt
@@ -0,0 +1 @@
+playwright==1.46.0
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
index d1f33d7..8b10568 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ authors = [{ name = "Kevin Veen-Birkenbach", email = "kevin@veen.world" }]
 license = { text = "MIT" }
 urls = { Homepage = "https://github.com/kevinveenbirkenbach/matomo-bootstrap" }
 
-dependencies = ["playwright==1.46.0"]
+dependencies = ["playwright>=1.46.0,<2"]
 
 # Provides a stable CLI name for Nix + pip installs:
 [project.scripts]