diff --git a/appengine/flexible/storage/requirements.txt b/appengine/flexible/storage/requirements.txt
index b4b161b134dc..97108c2951fa 100644
--- a/appengine/flexible/storage/requirements.txt
+++ b/appengine/flexible/storage/requirements.txt
@@ -1,3 +1,4 @@
 Flask==1.1.1
-google-cloud-storage==1.23.0
-gunicorn==20.0.4
+google-cloud-storage==1.26.0
+gunicorn==20.0.4; python_version > '3.0'
+gunicorn==19.10.0; python_version < '3.0'
diff --git a/asset/cloud-client/requirements.txt b/asset/cloud-client/requirements.txt
index d6af8654e6cb..8663e4044012 100644
--- a/asset/cloud-client/requirements.txt
+++ b/asset/cloud-client/requirements.txt
@@ -1,4 +1,4 @@
-google-cloud-storage==1.23.0
+google-cloud-storage==1.26.0
 google-cloud-asset==0.7.0
 google-cloud-resource-manager==0.30.0
 google-cloud-pubsub==1.1.0
diff --git a/auth/cloud-client/requirements.txt b/auth/cloud-client/requirements.txt
index 70d69cfcac86..a593c86ff32c 100644
--- a/auth/cloud-client/requirements.txt
+++ b/auth/cloud-client/requirements.txt
@@ -1 +1 @@
-google-cloud-storage==1.23.0
+google-cloud-storage==1.26.0
diff --git a/automl/cloud-client/requirements.txt b/automl/cloud-client/requirements.txt
index baaa37069532..41929401fe35 100644
--- a/automl/cloud-client/requirements.txt
+++ b/automl/cloud-client/requirements.txt
@@ -1,2 +1,2 @@
 google-cloud-automl==0.10.0
-google-cloud-storage==1.20.0
\ No newline at end of file
+google-cloud-storage==1.26.0
\ No newline at end of file
diff --git a/codelabs/flex_and_vision/requirements.txt b/codelabs/flex_and_vision/requirements.txt
index 31fcfde2839a..241f7ba3deb0 100644
--- a/codelabs/flex_and_vision/requirements.txt
+++ b/codelabs/flex_and_vision/requirements.txt
@@ -1,5 +1,6 @@
 Flask==1.1.1
-gunicorn==20.0.4
+gunicorn==20.0.4; python_version > '3.0'
+gunicorn==19.10.0; python_version < '3.0'
 google-cloud-vision==0.41.0
-google-cloud-storage==1.23.0
+google-cloud-storage==1.26.0
 google-cloud-datastore==1.10.0
diff --git a/dataproc/requirements.txt b/dataproc/requirements.txt
index f0d1ac13864c..95e55c33433e 100644
--- a/dataproc/requirements.txt
+++ b/dataproc/requirements.txt
@@ -2,5 +2,5 @@ grpcio==1.27.1
 google-auth==1.11.2
 google-auth-httplib2==0.0.3
 google-cloud==0.34.0
-google-cloud-storage==1.23.0
+google-cloud-storage==1.26.0
 google-cloud-dataproc==0.6.1
diff --git a/dlp/requirements.txt b/dlp/requirements.txt
index dccabd5de6bd..3cdb8fb8c0e6 100644
--- a/dlp/requirements.txt
+++ b/dlp/requirements.txt
@@ -1,5 +1,5 @@
 google-cloud-dlp==0.12.1
-google-cloud-storage==1.19.1
+google-cloud-storage==1.26.0
 google-cloud-pubsub==1.0.0
 google-cloud-datastore==1.9.0
 google-cloud-bigquery==1.20.0
diff --git a/functions/http/requirements.txt b/functions/http/requirements.txt
index 934f1719a49d..a5a47dcf0e26 100644
--- a/functions/http/requirements.txt
+++ b/functions/http/requirements.txt
@@ -1,2 +1,2 @@
-google-cloud-storage==1.23.0
+google-cloud-storage==1.26.0
 xmltodict==0.12.0
diff --git a/functions/imagemagick/requirements.txt b/functions/imagemagick/requirements.txt
index 20526c0befe9..6970c0b4cc41 100644
--- a/functions/imagemagick/requirements.txt
+++ b/functions/imagemagick/requirements.txt
@@ -1,3 +1,3 @@
 google-cloud-vision==0.39.0
-google-cloud-storage==1.19.1
+google-cloud-storage==1.26.0
 Wand==0.5.9
diff --git a/functions/ocr/app/requirements.txt b/functions/ocr/app/requirements.txt
index deb9dc50c951..bed811e7d286 100644
--- a/functions/ocr/app/requirements.txt
+++ b/functions/ocr/app/requirements.txt
@@ -1,4 +1,4 @@
 google-cloud-pubsub==1.0.0
-google-cloud-storage==1.19.1
+google-cloud-storage==1.26.0
 google-cloud-translate==1.6.0
 google-cloud-vision==0.39.0
diff --git a/healthcare/api-client/fhir/requirements.txt b/healthcare/api-client/fhir/requirements.txt
index 4f8345cc1f70..4c2b53f0d6ec 100644
--- a/healthcare/api-client/fhir/requirements.txt
+++ b/healthcare/api-client/fhir/requirements.txt
@@ -2,5 +2,5 @@ google-api-python-client==1.7.11
 google-auth-httplib2==0.0.3
 google-auth==1.11.2
 google-cloud==0.34.0
-google-cloud-storage==1.19.1
+google-cloud-storage==1.26.0
 requests==2.22.0
diff --git a/iot/api-client/gcs_file_to_device/requirements.txt b/iot/api-client/gcs_file_to_device/requirements.txt
index 73130d77f58b..a037d9b2d1a0 100644
--- a/iot/api-client/gcs_file_to_device/requirements.txt
+++ b/iot/api-client/gcs_file_to_device/requirements.txt
@@ -3,7 +3,7 @@ google-auth==1.11.2
 google-auth-httplib2==0.0.3
 google-cloud-iot==0.3.0
 google-cloud-pubsub==1.0.0
-google-cloud-storage==1.19.1
+google-cloud-storage==1.26.0
 cryptography==2.8
 paho-mqtt==1.4.0
 pyjwt==1.7.1
diff --git a/notebooks/requirements.txt b/notebooks/requirements.txt
index ef6627458637..e34b7323e798 100644
--- a/notebooks/requirements.txt
+++ b/notebooks/requirements.txt
@@ -1,3 +1,4 @@
-google-cloud-storage==1.23.0
+google-cloud-storage==1.26.0
 google-cloud-bigquery[pandas,pyarrow]==1.23.1
-matplotlib==3.1.2
+matplotlib==3.1.2; python_version > '3.0'
+matplotlib==2.2.5; python_version < '3.0'
diff --git a/run/image-processing/requirements.txt b/run/image-processing/requirements.txt
index d85ea1f7410f..6051bc07ecea 100644
--- a/run/image-processing/requirements.txt
+++ b/run/image-processing/requirements.txt
@@ -3,5 +3,5 @@ pytest==5.3.0; python_version > "3.0"
 pytest==4.6.6; python_version < "3.0"
 gunicorn==19.9.0
 google-cloud-vision==0.39.0
-google-cloud-storage==1.19.1
+google-cloud-storage==1.26.0
 Wand==0.5.9
\ No newline at end of file
diff --git a/storage/cloud-client/requirements.txt b/storage/cloud-client/requirements.txt
index ab438508a64e..ede7da0e8e76 100644
--- a/storage/cloud-client/requirements.txt
+++ b/storage/cloud-client/requirements.txt
@@ -1,2 +1,2 @@
 google-cloud-pubsub==1.1.0
-google-cloud-storage==1.25.0
+google-cloud-storage==1.26.0
diff --git a/storage/signed_urls/requirements.txt b/storage/signed_urls/requirements.txt
index b8a64f64ffcb..dcb78ba18e63 100644
--- a/storage/signed_urls/requirements.txt
+++ b/storage/signed_urls/requirements.txt
@@ -1,3 +1,3 @@
-google-cloud-storage==1.23.0
+google-cloud-storage==1.26.0
 google-auth==1.11.2
 six==1.13.0
diff --git a/testing/requirements.txt b/testing/requirements.txt
index fe6c8c77a4c1..d1bcc96c8524 100644
--- a/testing/requirements.txt
+++ b/testing/requirements.txt
@@ -12,7 +12,7 @@ responses==0.10.6
 WebTest==2.0.34
 webapp2==2.5.2
 google-api-python-client==1.7.11
-google-cloud-core==1.0.3
+google-cloud-core==1.3.0
 gcp-devrel-py-tools==0.0.15
 flask==1.1.1
 websocket-client==0.56.0
diff --git a/translate/automl/requirements.txt b/translate/automl/requirements.txt
index 06c1166ba747..0dbe115811e1 100644
--- a/translate/automl/requirements.txt
+++ b/translate/automl/requirements.txt
@@ -1,3 +1,3 @@
-google-cloud-translate==2.0.0
-google-cloud-storage==1.19.1
+google-cloud-translate==2.0.1
+google-cloud-storage==1.26.0
 google-cloud-automl==0.10.0
diff --git a/translate/cloud-client/requirements.txt b/translate/cloud-client/requirements.txt
index f8a1e7fe5e67..cd0aee0597c4 100644
--- a/translate/cloud-client/requirements.txt
+++ b/translate/cloud-client/requirements.txt
@@ -1,2 +1,2 @@
-google-cloud-translate==2.0.0
-google-cloud-storage==1.19.1
+google-cloud-translate==2.0.1
+google-cloud-storage==1.26.0
diff --git a/video/cloud-client/analyze/requirements.txt b/video/cloud-client/analyze/requirements.txt
index cf61c0964c59..9958046a7db9 100644
--- a/video/cloud-client/analyze/requirements.txt
+++ b/video/cloud-client/analyze/requirements.txt
@@ -1,2 +1,2 @@
 google-cloud-videointelligence==1.13.0
-google-cloud-storage==1.23.0
+google-cloud-storage==1.26.0
diff --git a/vision/cloud-client/detect/requirements.txt b/vision/cloud-client/detect/requirements.txt
index 9b98aca779c4..0114a4397dfe 100644
--- a/vision/cloud-client/detect/requirements.txt
+++ b/vision/cloud-client/detect/requirements.txt
@@ -1,2 +1,2 @@
 google-cloud-vision==0.41.0
-google-cloud-storage==1.19.1
+google-cloud-storage==1.26.0
diff --git a/vision/cloud-client/product_search/requirements.txt b/vision/cloud-client/product_search/requirements.txt
index b1736773d73d..fe042f49db70 100644
--- a/vision/cloud-client/product_search/requirements.txt
+++ b/vision/cloud-client/product_search/requirements.txt
@@ -1,2 +1,2 @@
 google-cloud-vision==0.39.0
-google-cloud-storage==1.25.0
\ No newline at end of file
+google-cloud-storage==1.26.0
\ No newline at end of file