diff --git a/requirements-dev.in b/requirements-dev.in
index 7e7c2167..5041d6b2 100644
--- a/requirements-dev.in
+++ b/requirements-dev.in
@@ -215,7 +215,7 @@ mock==5.1.0
     # via
     #   -c requirements.txt
     #   mozanalysis
-more-itertools==10.5.0
+more-itertools==10.6.0
     # via
     #   jaraco-classes
     #   jaraco-functools
diff --git a/requirements-dev.txt b/requirements-dev.txt
index d7d37e4c..f6a25b75 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -973,9 +973,9 @@ mock==5.1.0 \
     --hash=sha256:18c694e5ae8a208cdb3d2c20a993ca1a7b0efa258c247a1e565150f477f83744 \
     --hash=sha256:5e96aad5ccda4718e0a229ed94b2024df75cc2d55575ba5762d31f5767b8767d
     # via -r requirements-dev.in
-more-itertools==10.5.0 \
-    --hash=sha256:037b0d3203ce90cca8ab1defbbdac29d5f993fc20131f3664dc8d6acfa872aef \
-    --hash=sha256:5482bfef7849c25dc3c6dd53a6173ae4795da2a41a80faea6700d9f5846c5da6
+more-itertools==10.6.0 \
+    --hash=sha256:2cd7fad1009c31cc9fb6a035108509e6547547a7a738374f10bd49a09eb3ee3b \
+    --hash=sha256:6eb054cb4b6db1473f6e15fcc676a08e4732548acd47c708f0e179c2c7c01e89
     # via
     #   -r requirements-dev.in
     #   jaraco-classes