diff --git a/.Rbuildignore b/.Rbuildignore
index 0f10e8a..4e02fb0 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -2,3 +2,4 @@
 ^\.Rproj\.user$
 ^.*\.sublime-.*$
 ^cran-comments.md$
+^patches$
diff --git a/DESCRIPTION b/DESCRIPTION
index 1251ad0..a18b109 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: shinythemes
 Title: Themes for Shiny
-Version: 1.1.2
+Version: 1.1.2.9000
 Authors@R: c(
     person("Winston", "Chang", role = c("aut", "cre"), email = "winston@rstudio.com"),
     person(family = "RStudio", role = "cph"),
diff --git a/NEWS.md b/NEWS.md
index a60aef6..6bcf585 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,8 @@
+shinythemes 1.1.2.9000
+=================
+
+* Added additional CSS rules to make dark mode themes (e.g., darkly) work better with `shiny::sliderInput()` ([#14](https://github.com/rstudio/shinythemes/pull/14))
+
 shinythemes 1.1.2
 =================
 
diff --git a/inst/shinythemes/css/cyborg.min.css b/inst/shinythemes/css/cyborg.min.css
index aac1c5a..89e3ed5 100644
--- a/inst/shinythemes/css/cyborg.min.css
+++ b/inst/shinythemes/css/cyborg.min.css
@@ -10,7 +10,8 @@
   font-weight: 700;
   src: url(../fonts/Roboto_700.ttf) format('truetype');
 }
-
+/* For compatibility with shiny::sliderInput() v1.6 & above */
+.irs-grid-pol{background:#fff !important;}.irs-grid-text{color:#fff !important;}.irs-min{color:#fff !important;}.irs-max{color:#fff !important;}
 /*!
  * bootswatch v3.3.7
  * Homepage: http://bootswatch.com
diff --git a/inst/shinythemes/css/darkly.min.css b/inst/shinythemes/css/darkly.min.css
index 0082fec..eabc5ff 100644
--- a/inst/shinythemes/css/darkly.min.css
+++ b/inst/shinythemes/css/darkly.min.css
@@ -16,7 +16,8 @@
   font-weight: 400;
   src: url(../fonts/Lato_400italic.ttf) format('truetype');
 }
-
+/* For compatibility with shiny::sliderInput() v1.6 & above */
+.irs-grid-pol{background:#fff !important;}.irs-grid-text{color:#fff !important;}.irs-min{color:#fff !important;}.irs-max{color:#fff !important;}
 /*!
  * bootswatch v3.3.7
  * Homepage: http://bootswatch.com
diff --git a/inst/shinythemes/css/slate.min.css b/inst/shinythemes/css/slate.min.css
index 5eb3a4c..6f935d8 100644
--- a/inst/shinythemes/css/slate.min.css
+++ b/inst/shinythemes/css/slate.min.css
@@ -1,3 +1,5 @@
+/* For compatibility with shiny::sliderInput() v1.6 & above */
+.irs-grid-pol{background:#c8c8c8 !important;}.irs-grid-text{color:#c8c8c8 !important;}.irs-min{color:#c8c8c8 !important;}.irs-max{color:#c8c8c8 !important;}
 /*!
  * bootswatch v3.3.7
  * Homepage: http://bootswatch.com
diff --git a/inst/shinythemes/css/superhero.min.css b/inst/shinythemes/css/superhero.min.css
index f0deb84..bf14fc9 100644
--- a/inst/shinythemes/css/superhero.min.css
+++ b/inst/shinythemes/css/superhero.min.css
@@ -16,7 +16,8 @@
   font-weight: 700;
   src: url(../fonts/Lato_700.ttf) format('truetype');
 }
-
+/* For compatibility with shiny::sliderInput() v1.6 & above */
+.irs-grid-pol{background:#ebebeb !important;}.irs-grid-text{color:#ebebeb !important;}.irs-min{color:#ebebeb !important;}.irs-max{color:#ebebeb !important;}
 /*!
  * bootswatch v3.3.7
  * Homepage: http://bootswatch.com
diff --git a/patches/001-readable-sliderInput.patch b/patches/001-readable-sliderInput.patch
new file mode 100644
index 0000000..1b16575
--- /dev/null
+++ b/patches/001-readable-sliderInput.patch
@@ -0,0 +1,52 @@
+diff --git a/inst/shinythemes/css/cyborg.min.css b/inst/shinythemes/css/cyborg.min.css
+index aac1c5a..d3faf47 100644
+--- a/inst/shinythemes/css/cyborg.min.css
++++ b/inst/shinythemes/css/cyborg.min.css
+@@ -10,7 +10,8 @@
+   font-weight: 700;
+   src: url(../fonts/Roboto_700.ttf) format('truetype');
+ }
+-
++/* For compatibility with shiny::sliderInput() v1.6 & above */
++.irs-grid-pol{background:#fff !important;}.irs-grid-text{color:#fff !important;}.irs-min{color:#fff !important;}.irs-max{color:#fff !important;}
+ /*!
+  * bootswatch v3.3.7
+  * Homepage: http://bootswatch.com
+diff --git a/inst/shinythemes/css/darkly.min.css b/inst/shinythemes/css/darkly.min.css
+index 0082fec..745b66f 100644
+--- a/inst/shinythemes/css/darkly.min.css
++++ b/inst/shinythemes/css/darkly.min.css
+@@ -16,7 +16,8 @@
+   font-weight: 400;
+   src: url(../fonts/Lato_400italic.ttf) format('truetype');
+ }
+-
++/* For compatibility with shiny::sliderInput() v1.6 & above */
++.irs-grid-pol{background:#fff !important;}.irs-grid-text{color:#fff !important;}.irs-min{color:#fff !important;}.irs-max{color:#fff !important;}
+ /*!
+  * bootswatch v3.3.7
+  * Homepage: http://bootswatch.com
+diff --git a/inst/shinythemes/css/slate.min.css b/inst/shinythemes/css/slate.min.css
+index 5eb3a4c..15a0918 100644
+--- a/inst/shinythemes/css/slate.min.css
++++ b/inst/shinythemes/css/slate.min.css
+@@ -1,3 +1,5 @@
++/* For compatibility with shiny::sliderInput() v1.6 & above */
++.irs-grid-pol{background:#c8c8c8 !important;}.irs-grid-text{color:#c8c8c8 !important;}.irs-min{color:#c8c8c8 !important;}.irs-max{color:#c8c8c8 !important;}
+ /*!
+  * bootswatch v3.3.7
+  * Homepage: http://bootswatch.com
+diff --git a/inst/shinythemes/css/superhero.min.css b/inst/shinythemes/css/superhero.min.css
+index f0deb84..ed12a30 100644
+--- a/inst/shinythemes/css/superhero.min.css
++++ b/inst/shinythemes/css/superhero.min.css
+@@ -16,7 +16,8 @@
+   font-weight: 700;
+   src: url(../fonts/Lato_700.ttf) format('truetype');
+ }
+-
++/* For compatibility with shiny::sliderInput() v1.6 & above */
++.irs-grid-pol{background:#ebebeb !important;}.irs-grid-text{color:#ebebeb !important;}.irs-min{color:#ebebeb !important;}.irs-max{color:#ebebeb !important;}
+ /*!
+  * bootswatch v3.3.7
+  * Homepage: http://bootswatch.com