diff --git a/.travis.yml b/.travis.yml
index b9ec483..425929c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,4 +13,4 @@ notifications:
 script:
   # we can't actually run on travis, so just make sure it's installable
  - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
- - julia -e 'Pkg.clone(pwd()); Pkg.build("PortAudio"); Pkg.checkout("Compat"); Pkg.checkout("RingBuffers"); using PortAudio'
+ - julia -e 'Pkg.clone(pwd()); Pkg.build("PortAudio"); Pkg.checkout("Compat"); Pkg.checkout("RingBuffers"); Pkg.checkout("SampledSignals"); using PortAudio'
diff --git a/README.md b/README.md
index 0057029..917f449 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@ PortAudio.jl
 
 PortAudio.jl is a wrapper for [libportaudio](http://www.portaudio.com/), which gives cross-platform access to audio devices. It is compatible with the types defined in [SampledSignals.jl](https://github.com/JuliaAudio/SampledSignals.jl). It provides a `PortAudioStream` type, which can be read from and written to.
 
-#### NOTE: This package currently requires the master branch of the `Compat` and `RingBuffers` packages. Use `Pkg.checkout` to checkout the master.
+#### NOTE: This package currently requires the master branch of the `Compat`, `SampledSignals` and `RingBuffers` packages. Use `Pkg.checkout` to checkout the master.
 
 ## Opening a stream
 
diff --git a/appveyor.yml b/appveyor.yml
index 9db20fd..ff43acb 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -28,7 +28,7 @@ build_script:
 # Need to convert from shallow to complete for Pkg.clone to work
   - IF EXIST .git\shallow (git fetch --unshallow)
   - C:\projects\julia\bin\julia -e "versioninfo();
-      Pkg.clone(pwd(), \"PortAudio\"); Pkg.build(\"PortAudio\"); Pkg.checkout(\"Compat\"); Pkg.checkout(\"RingBuffers\")"
+      Pkg.clone(pwd(), \"PortAudio\"); Pkg.build(\"PortAudio\"); Pkg.checkout(\"Compat\"); Pkg.checkout(\"RingBuffers\"); Pkg.checkout(\"SampledSignals\")"
 
 test_script:
   # can't actually run the test, so just make sure it's installable