diff --git a/packages/google-cloud-language/samples/snippets/api/requirements.txt b/packages/google-cloud-language/samples/snippets/api/requirements.txt
index 28ef89127f4b..af5ec8147bf1 100644
--- a/packages/google-cloud-language/samples/snippets/api/requirements.txt
+++ b/packages/google-cloud-language/samples/snippets/api/requirements.txt
@@ -1 +1,3 @@
-google-api-python-client==1.6.3
+google-api-python-client==1.6.4
+google-auth==1.1.1
+google-auth-httplib2==0.0.2
diff --git a/packages/google-cloud-language/samples/snippets/movie_nl/requirements.txt b/packages/google-cloud-language/samples/snippets/movie_nl/requirements.txt
index 69ae9a1934bc..e9b67954aeaf 100644
--- a/packages/google-cloud-language/samples/snippets/movie_nl/requirements.txt
+++ b/packages/google-cloud-language/samples/snippets/movie_nl/requirements.txt
@@ -1,2 +1,4 @@
-google-api-python-client==1.6.3
+google-api-python-client==1.6.4
+google-auth==1.1.1
+google-auth-httplib2==0.0.2
 requests==2.18.4
diff --git a/packages/google-cloud-language/samples/snippets/ocr_nl/requirements.txt b/packages/google-cloud-language/samples/snippets/ocr_nl/requirements.txt
index 28ef89127f4b..af5ec8147bf1 100644
--- a/packages/google-cloud-language/samples/snippets/ocr_nl/requirements.txt
+++ b/packages/google-cloud-language/samples/snippets/ocr_nl/requirements.txt
@@ -1 +1,3 @@
-google-api-python-client==1.6.3
+google-api-python-client==1.6.4
+google-auth==1.1.1
+google-auth-httplib2==0.0.2
diff --git a/packages/google-cloud-language/samples/snippets/syntax_triples/requirements.txt b/packages/google-cloud-language/samples/snippets/syntax_triples/requirements.txt
index 28ef89127f4b..af5ec8147bf1 100644
--- a/packages/google-cloud-language/samples/snippets/syntax_triples/requirements.txt
+++ b/packages/google-cloud-language/samples/snippets/syntax_triples/requirements.txt
@@ -1 +1,3 @@
-google-api-python-client==1.6.3
+google-api-python-client==1.6.4
+google-auth==1.1.1
+google-auth-httplib2==0.0.2
diff --git a/packages/google-cloud-language/samples/snippets/tutorial/requirements.txt b/packages/google-cloud-language/samples/snippets/tutorial/requirements.txt
index 28ef89127f4b..af5ec8147bf1 100644
--- a/packages/google-cloud-language/samples/snippets/tutorial/requirements.txt
+++ b/packages/google-cloud-language/samples/snippets/tutorial/requirements.txt
@@ -1 +1,3 @@
-google-api-python-client==1.6.3
+google-api-python-client==1.6.4
+google-auth==1.1.1
+google-auth-httplib2==0.0.2