diff --git a/2.7/Dockerfile b/2.7/Dockerfile
index 3c124783e..d14992ff6 100644
--- a/2.7/Dockerfile
+++ b/2.7/Dockerfile
@@ -51,9 +51,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/2.7/alpine/Dockerfile b/2.7/alpine/Dockerfile
index fe299aa02..1fe9b78f2 100644
--- a/2.7/alpine/Dockerfile
+++ b/2.7/alpine/Dockerfile
@@ -68,9 +68,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/2.7/slim/Dockerfile b/2.7/slim/Dockerfile
index fa8a55d60..5b43628b8 100644
--- a/2.7/slim/Dockerfile
+++ b/2.7/slim/Dockerfile
@@ -66,9 +66,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/2.7/wheezy/Dockerfile b/2.7/wheezy/Dockerfile
index b14b748a0..f6cbda7a1 100644
--- a/2.7/wheezy/Dockerfile
+++ b/2.7/wheezy/Dockerfile
@@ -51,9 +51,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/3.3/Dockerfile b/3.3/Dockerfile
index 0c171389f..55a6506a7 100644
--- a/3.3/Dockerfile
+++ b/3.3/Dockerfile
@@ -60,9 +60,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/3.3/alpine/Dockerfile b/3.3/alpine/Dockerfile
index 042ae7ce4..6b6c9776d 100644
--- a/3.3/alpine/Dockerfile
+++ b/3.3/alpine/Dockerfile
@@ -78,9 +78,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/3.3/slim/Dockerfile b/3.3/slim/Dockerfile
index 648b8abbe..3c72d9a51 100644
--- a/3.3/slim/Dockerfile
+++ b/3.3/slim/Dockerfile
@@ -75,9 +75,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/3.3/wheezy/Dockerfile b/3.3/wheezy/Dockerfile
index 580513e7d..4fdada3c2 100644
--- a/3.3/wheezy/Dockerfile
+++ b/3.3/wheezy/Dockerfile
@@ -60,9 +60,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/3.4/Dockerfile b/3.4/Dockerfile
index 93bc245b4..d6888f19b 100644
--- a/3.4/Dockerfile
+++ b/3.4/Dockerfile
@@ -60,9 +60,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/3.4/alpine/Dockerfile b/3.4/alpine/Dockerfile
index 684a95488..a0438dc6d 100644
--- a/3.4/alpine/Dockerfile
+++ b/3.4/alpine/Dockerfile
@@ -78,9 +78,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/3.4/slim/Dockerfile b/3.4/slim/Dockerfile
index f4ce201e5..df4632c31 100644
--- a/3.4/slim/Dockerfile
+++ b/3.4/slim/Dockerfile
@@ -75,9 +75,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/3.4/wheezy/Dockerfile b/3.4/wheezy/Dockerfile
index f6c1ce755..ad2f99620 100644
--- a/3.4/wheezy/Dockerfile
+++ b/3.4/wheezy/Dockerfile
@@ -60,9 +60,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/3.5/Dockerfile b/3.5/Dockerfile
index 85bf3bbf6..c609a9749 100644
--- a/3.5/Dockerfile
+++ b/3.5/Dockerfile
@@ -60,9 +60,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/3.5/alpine/Dockerfile b/3.5/alpine/Dockerfile
index a867fb86b..a222912b0 100644
--- a/3.5/alpine/Dockerfile
+++ b/3.5/alpine/Dockerfile
@@ -78,9 +78,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/3.5/slim/Dockerfile b/3.5/slim/Dockerfile
index 422f81a11..0cc038e33 100644
--- a/3.5/slim/Dockerfile
+++ b/3.5/slim/Dockerfile
@@ -75,9 +75,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/3.6/Dockerfile b/3.6/Dockerfile
index 6d9a1c467..3dd6eef4f 100644
--- a/3.6/Dockerfile
+++ b/3.6/Dockerfile
@@ -60,9 +60,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/3.6/alpine/Dockerfile b/3.6/alpine/Dockerfile
index b16146e7d..e099c50bf 100644
--- a/3.6/alpine/Dockerfile
+++ b/3.6/alpine/Dockerfile
@@ -78,9 +78,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/3.6/slim/Dockerfile b/3.6/slim/Dockerfile
index 7ebb1e883..bb1ed167e 100644
--- a/3.6/slim/Dockerfile
+++ b/3.6/slim/Dockerfile
@@ -75,9 +75,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index 79e1cd2e5..6b9c054e9 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -72,9 +72,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index 56c6ef26d..8c8c33bd5 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -54,9 +54,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \
diff --git a/Dockerfile-slim.template b/Dockerfile-slim.template
index 6c64ab5a6..3bbaa7cee 100644
--- a/Dockerfile-slim.template
+++ b/Dockerfile-slim.template
@@ -69,9 +69,6 @@ RUN set -ex \
 # ("Requirement already up-to-date: pip==8.1.2 in /usr/local/lib/python3.6/site-packages")
 # https://github.com/docker-library/python/pull/143#issuecomment-241032683
 	&& pip3 install --no-cache-dir --upgrade --force-reinstall "pip==$PYTHON_PIP_VERSION" \
-# then we use "pip list" to ensure we don't have more than one pip version installed
-# https://github.com/docker-library/python/pull/100
-	&& [ "$(pip list |tac|tac| awk -F '[ ()]+' '$1 == "pip" { print $2; exit }')" = "$PYTHON_PIP_VERSION" ] \
 	\
 	&& find /usr/local -depth \
 		\( \