diff --git a/Gemfile b/Gemfile
index bda0314..0970851 100644
--- a/Gemfile
+++ b/Gemfile
@@ -22,7 +22,7 @@ gem "sdoc", "~> 2.6.1", group: :doc
 ## explicit choices
 
 gem "aws-sdk-core", "~> 3"
-gem "aws-sdk-s3", '~> 1.120'
+gem "aws-sdk-s3", '~> 1.185'
 gem 'aws-sdk-rails', '~> 3.7', '>= 3.7.1'
 gem "bootstrap-sass", "~> 3.4.1"
 gem "composite_primary_keys", "~> 14.0.6"
diff --git a/Gemfile.lock b/Gemfile.lock
index 73faeaa..86cc37c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -102,21 +102,23 @@ GEM
     ansi (1.5.0)
     autoprefixer-rails (10.4.13.0)
       execjs (~> 2)
-    aws-eventstream (1.2.0)
-    aws-partitions (1.742.0)
+    aws-eventstream (1.3.2)
+    aws-partitions (1.1096.0)
     aws-record (2.10.1)
       aws-sdk-dynamodb (~> 1.18)
-    aws-sdk-core (3.171.0)
-      aws-eventstream (~> 1, >= 1.0.2)
-      aws-partitions (~> 1, >= 1.651.0)
-      aws-sigv4 (~> 1.5)
+    aws-sdk-core (3.223.0)
+      aws-eventstream (~> 1, >= 1.3.0)
+      aws-partitions (~> 1, >= 1.992.0)
+      aws-sigv4 (~> 1.9)
+      base64
       jmespath (~> 1, >= 1.6.1)
+      logger
     aws-sdk-dynamodb (1.83.0)
       aws-sdk-core (~> 3, >= 3.165.0)
       aws-sigv4 (~> 1.1)
-    aws-sdk-kms (1.63.0)
-      aws-sdk-core (~> 3, >= 3.165.0)
-      aws-sigv4 (~> 1.1)
+    aws-sdk-kms (1.100.0)
+      aws-sdk-core (~> 3, >= 3.216.0)
+      aws-sigv4 (~> 1.5)
     aws-sdk-rails (3.7.1)
       aws-record (~> 2)
       aws-sdk-ses (~> 1)
@@ -125,10 +127,10 @@ GEM
       aws-sessionstore-dynamodb (~> 2)
       concurrent-ruby (~> 1)
       railties (>= 5.2.0)
-    aws-sdk-s3 (1.120.1)
-      aws-sdk-core (~> 3, >= 3.165.0)
+    aws-sdk-s3 (1.185.0)
+      aws-sdk-core (~> 3, >= 3.216.0)
       aws-sdk-kms (~> 1)
-      aws-sigv4 (~> 1.4)
+      aws-sigv4 (~> 1.5)
     aws-sdk-ses (1.49.0)
       aws-sdk-core (~> 3, >= 3.165.0)
       aws-sigv4 (~> 1.1)
@@ -141,8 +143,9 @@ GEM
     aws-sessionstore-dynamodb (2.0.1)
       aws-sdk-dynamodb (~> 1)
       rack (~> 2)
-    aws-sigv4 (1.5.2)
+    aws-sigv4 (1.11.0)
       aws-eventstream (~> 1, >= 1.0.2)
+    base64 (0.2.0)
     bcrypt (3.1.18)
     bindex (0.8.1)
     bootstrap-sass (3.4.1)
@@ -284,6 +287,7 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     locale (2.1.3)
+    logger (1.7.0)
     loofah (2.20.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
@@ -471,7 +475,7 @@ DEPENDENCIES
   annotate (~> 3.2.0)
   aws-sdk-core (~> 3)
   aws-sdk-rails (~> 3.7, >= 3.7.1)
-  aws-sdk-s3 (~> 1.120)
+  aws-sdk-s3 (~> 1.185)
   bootstrap-sass (~> 3.4.1)
   byebug
   composite_primary_keys (~> 14.0.6)