diff --git a/rosdep/python.yaml b/rosdep/python.yaml
index e4be748463c0e..4f98925d90127 100644
--- a/rosdep/python.yaml
+++ b/rosdep/python.yaml
@@ -1334,9 +1334,6 @@ python-cython-pip:
   fedora:
     pip:
       packages: [cython]
-  gentoo:
-    pip:
-      packages: [cython]
   ubuntu:
     pip:
       packages: [cython]
@@ -2700,9 +2697,6 @@ python-multiprocess-pip:
   fedora:
     pip:
       packages: [multiprocess]
-  gentoo:
-    pip:
-      packages: [multiprocess]
   ubuntu:
     pip:
       packages: [multiprocess]
@@ -3064,9 +3058,6 @@ python-parameterized:
       pip:
         packages: [parameterized]
   fedora: [python-parameterized]
-  gentoo:
-    pip:
-      packages: [parameterized]
   osx:
     pip:
       packages: [parameterized]
@@ -3715,9 +3706,6 @@ python-pyqtgraph:
   fedora:
     pip:
       packages: [pyqtgraph]
-  gentoo:
-    pip:
-      packages: [pyqtgraph]
   nixos: [pythonPackages.pyqtgraph]
   ubuntu:
     bionic: [python-pyqtgraph]
@@ -5727,9 +5715,6 @@ python3-aio-pika-pip:
   fedora:
     pip:
       packages: [aio-pika]
-  gentoo:
-    pip:
-      packages: [aio-pika]
   ubuntu:
     pip:
       packages: [aio-pika]
@@ -5753,9 +5738,6 @@ python3-ansible-runner-pip:
   fedora:
     pip:
       packages: [ansible-runner]
-  gentoo:
-    pip:
-      packages: [ansible-runner]
   ubuntu:
     pip:
       packages: [ansible-runner]
@@ -6557,9 +6539,6 @@ python3-jupyros-pip:
   fedora:
     pip:
       packages: [jupyros]
-  gentoo:
-    pip:
-      packages: [jupyros]
   ubuntu:
     pip:
       packages: [jupyros]
@@ -6852,6 +6831,7 @@ python3-parameterized:
   alpine: [py3-parameterized]
   debian: [python3-parameterized]
   fedora: [python3-parameterized]
+  gentoo: [dev-python/parameterized]
   ubuntu: [python3-parameterized]
 python3-paramiko:
   debian: [python3-paramiko]
@@ -7600,9 +7580,6 @@ python3-simple-pid-pip:
   fedora:
     pip:
       packages: [simple-pid]
-  gentoo:
-    pip:
-      packages: [simple-pid]
   osx:
     pip:
       packages: [simple-pid]
@@ -7630,9 +7607,6 @@ python3-siphon-pip:
   fedora:
     pip:
       packages: [siphon]
-  gentoo:
-    pip:
-      packages: [siphon]
   osx:
     pip:
       packages: [siphon]
@@ -7773,9 +7747,6 @@ python3-tilestache-pip:
   fedora:
     pip:
       packages: [tilestache]
-  gentoo:
-    pip:
-      packages: [tilestache]
   ubuntu:
     pip:
       packages: [tilestache]
@@ -7877,9 +7848,7 @@ python3-vcstool:
     pip:
       packages: [vcstool]
   fedora: [python3-vcstool]
-  gentoo:
-    pip:
-      packages: [vcstool]
+  gentoo: [vcstool]
   macports:
     pip:
       packages: [vcstool]