diff --git a/dev-requirements.txt b/dev-requirements.txt
index 1281b694..aeed6f21 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -996,7 +996,7 @@ aiohttp==3.8.4
 # @modified 20230625 - Task #4962: Build and test skyline v4.0.0
 #                      Task #4778: v4.0.0 - update dependencies
 #urllib3==1.26.13
-urllib3==1.26.16
+urllib3==1.26.18
 
 # @added 201906025 - Branch #956: flux
 # @modified 20211220 - Task #4344: Update dependencies
diff --git a/docs/readthedocs.requirements.txt b/docs/readthedocs.requirements.txt
index a748a10e..0ca5f0c6 100644
--- a/docs/readthedocs.requirements.txt
+++ b/docs/readthedocs.requirements.txt
@@ -389,7 +389,7 @@ aiohttp==3.8.4
 # @modified 20230625 - Task #4962: Build and test skyline v4.0.0
 #                      Task #4778: v4.0.0 - update dependencies
 #urllib3==1.26.9
-urllib3==1.26.16
+urllib3==1.26.18
 
 # @modified 20211220 - Task #4344: Update dependencies
 #graphyte==1.6.0
diff --git a/requirements.txt b/requirements.txt
index e2a15782..f0e60224 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -46,7 +46,7 @@ PyJWT==2.7.0
 git+https://github.com/earthgecko/luminol@40791e2#egg=luminol
 slackclient==2.9.4
 aiohttp==3.8.4
-urllib3==1.26.16
+urllib3==1.26.18
 graphyte==1.7.1
 statsd==4.0.1
 falcon==3.1.1