diff --git a/.ruby-version b/.ruby-version
index cb50681..437459c 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.0.0-p247
+2.5.0
diff --git a/.travis.yml b/.travis.yml
index 1ba875c..de79740 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,5 @@
 language: ruby
 rvm:
-  - 1.9.3
-  - 2.0.0
+  - 2.5.0
 services:
   - redis-server
diff --git a/spec/lib/tabs/metrics/counter_spec.rb b/spec/lib/tabs/metrics/counter_spec.rb
index 776e775..b16dce9 100644
--- a/spec/lib/tabs/metrics/counter_spec.rb
+++ b/spec/lib/tabs/metrics/counter_spec.rb
@@ -135,7 +135,7 @@ def create_span(time_unit)
 
     before do
       3.times { metric.increment }
-      expect(exists("stat:counter:foo:total")).to be_true
+      expect(exists("stat:counter:foo:total")).to be_truthy
       @count_keys = (Tabs::Resolution.all.map do |res|
         smembers("stat:counter:foo:keys:#{res}")
       end).flatten
@@ -143,18 +143,18 @@ def create_span(time_unit)
     end
 
     it "deletes the counter total key" do
-      expect(exists("stat:counter:foo:total")).to be_false
+      expect(exists("stat:counter:foo:total")).to be_falsey
     end
 
     it "deletes all resolution count keys" do
       @count_keys.each do |key|
-        expect(exists(key)).to be_false
+        expect(exists(key)).to be_falsey
       end
     end
 
     it "deletes all resolution key collection keys" do
       Tabs::Resolution.all.each do |res|
-        expect(exists("stat:counter:foo:keys:#{res}")).to be_false
+        expect(exists("stat:counter:foo:keys:#{res}")).to be_falsey
       end
     end
 
diff --git a/spec/lib/tabs/metrics/value_spec.rb b/spec/lib/tabs/metrics/value_spec.rb
index 02f104c..4432024 100644
--- a/spec/lib/tabs/metrics/value_spec.rb
+++ b/spec/lib/tabs/metrics/value_spec.rb
@@ -113,13 +113,13 @@ def create_span(time_unit)
 
     it "deletes all resolution count keys" do
       @count_keys.each do |key|
-        expect(exists(key)).to be_false
+        expect(exists(key)).to be_falsey
       end
     end
 
     it "deletes all resolution key collection keys" do
       Tabs::Resolution.all.each do |res|
-        expect(exists("stat:value:foo:keys:#{res}")).to be_false
+        expect(exists("stat:value:foo:keys:#{res}")).to be_falsey
       end
     end
 
diff --git a/spec/lib/tabs_spec.rb b/spec/lib/tabs_spec.rb
index a0cb826..18eac73 100644
--- a/spec/lib/tabs_spec.rb
+++ b/spec/lib/tabs_spec.rb
@@ -73,11 +73,11 @@
 
     it "returns true if the metric exists" do
       Tabs.create_metric("foo", "counter")
-      expect(Tabs.metric_exists?("foo")).to be_true
+      expect(Tabs.metric_exists?("foo")).to be_truthy
     end
 
     it "returns false if the metric does not exist" do
-      expect(Tabs.metric_exists?("foo")).to be_false
+      expect(Tabs.metric_exists?("foo")).to be_falsey
     end
 
   end
@@ -95,7 +95,7 @@
 
     it "results in metric_exists? returning false" do
       Tabs.drop_metric!("foo")
-      expect(Tabs.metric_exists?("foo")).to be_false
+      expect(Tabs.metric_exists?("foo")).to be_falsey
     end
 
     it "calls drop! on the metric" do
@@ -113,8 +113,8 @@
       Tabs.create_metric("foo", "counter")
       Tabs.create_metric("bar", "value")
       Tabs.drop_all_metrics!
-      expect(Tabs.metric_exists?("foo")).to be_false
-      expect(Tabs.metric_exists?("bar")).to be_false
+      expect(Tabs.metric_exists?("foo")).to be_falsey
+      expect(Tabs.metric_exists?("bar")).to be_falsey
     end
 
   end
@@ -127,9 +127,9 @@
     end
 
     it "creates the metric if it doesn't exist" do
-      expect(Tabs.metric_exists?("foo")).to be_false
+      expect(Tabs.metric_exists?("foo")).to be_falsey
       lambda { Tabs.increment_counter("foo") }.should_not raise_error
-      expect(Tabs.metric_exists?("foo")).to be_true
+      expect(Tabs.metric_exists?("foo")).to be_truthy
     end
 
     it "calls increment on the metric" do
@@ -144,9 +144,9 @@
   describe ".record_value" do
 
     it "creates the metric if it doesn't exist" do
-      expect(Tabs.metric_exists?("foo")).to be_false
+      expect(Tabs.metric_exists?("foo")).to be_falsey
       lambda { Tabs.record_value("foo", 38) }.should_not raise_error
-      expect(Tabs.metric_exists?("foo")).to be_true
+      expect(Tabs.metric_exists?("foo")).to be_truthy
     end
 
     it "raises a Tabs::MetricTypeMismatchError if the metric is the wrong type" do
@@ -216,7 +216,7 @@
       metric.record(42, now)
       Tabs.drop_resolution_for_metric!("baz", :minute)
       minute_key = Tabs::Metrics::Value.new("baz").storage_key(:minute, now)
-      expect(Tabs::Storage.exists(minute_key)).to be_false
+      expect(Tabs::Storage.exists(minute_key)).to be_falsey
     end
   end
 
diff --git a/tabs.gemspec b/tabs.gemspec
index 16e50c5..b75979f 100644
--- a/tabs.gemspec
+++ b/tabs.gemspec
@@ -27,7 +27,7 @@ within major point releases.
 EOS
 
   gem.add_dependency "activesupport", ">= 3.2"
-  gem.add_dependency "redis", "~> 3.0.0"
+  gem.add_dependency "redis", "~> 4.1.0"
 
   gem.add_development_dependency "pry"
   gem.add_development_dependency "pry-nav"