diff --git a/common/poetry.lock b/common/poetry.lock
index 696dcb36d509498476ab2f5a1b67451f12f95f40..9a42637dd95b439a257bc035a9c81a7198ac2003 100644
Binary files a/common/poetry.lock and b/common/poetry.lock differ
diff --git a/common/pyproject.toml b/common/pyproject.toml
index d499fd72844b1516a60a602a1c12277f167151e7..9590454498d87945cedddbc85223986fa9531c8b 100644
--- a/common/pyproject.toml
+++ b/common/pyproject.toml
@@ -8,7 +8,7 @@ packages = [{ include = "polystar" }]
 [tool.poetry.dependencies]
 python = "^3.7"
 dynaconf = "^2.2.2"
-opencv-python = "^4.2.0"
+opencv-python = "4.1.x"
 injector = "^0.18.3"
 numpy = "1.18.x"
 matplotlib = "^3.1.3"
diff --git a/drone-at-base/poetry.lock b/drone-at-base/poetry.lock
index a71cb44e19bfb263ef690b2f061b8284fbf17e53..5d5ab9b3fe409ee080089ae7f272c78a9f47c25b 100644
Binary files a/drone-at-base/poetry.lock and b/drone-at-base/poetry.lock differ
diff --git a/robots-at-robots/poetry.lock b/robots-at-robots/poetry.lock
index a71cb44e19bfb263ef690b2f061b8284fbf17e53..5d5ab9b3fe409ee080089ae7f272c78a9f47c25b 100644
Binary files a/robots-at-robots/poetry.lock and b/robots-at-robots/poetry.lock differ
diff --git a/robots-at-runes/poetry.lock b/robots-at-runes/poetry.lock
index a71cb44e19bfb263ef690b2f061b8284fbf17e53..5d5ab9b3fe409ee080089ae7f272c78a9f47c25b 100644
Binary files a/robots-at-runes/poetry.lock and b/robots-at-runes/poetry.lock differ