diff --git a/stack.yaml b/stack.yaml
index 9b9f32f..70db80c 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,15 +1,11 @@
-resolver: lts-13.19
+resolver: lts-17.1
 
 # packages: []
 
 
 extra-deps:
-  - cairo-0.13.6.0
-  - gtk2hs-buildtools-0.13.5.0
-  - SDL-0.6.7.0
-  - SDL-gfx-0.7.0.0
-  - SDL-image-0.6.2.0
-  - SDL-ttf-0.6.3.0
-  - unagi-chan-0.4.1.0
-
-
+  - cairo-0.13.8.2@sha256:ef1709c3c4d2c6d68a9a51d9f220dccc0745f6468d2d0868c15a7ecdf8f325a1,4078
+  - gtk2hs-buildtools-0.13.8.3@sha256:207229eee7abff12aba2740b32131522086275e46f2e72a0f5bbc3cb781e9d4d,5304
+  - SDL-0.6.7.0@sha256:9d6ba75c0cab575ec38468c8277803983e985f9622437aeca6a53e6a7337a7d5,2045
+  - SDL-ttf-0.6.3.0@sha256:e599ef3256b489071d0af6eccdc3a139ef09c09f935357a6c23766ed5ca2de45,1462
+  - SDL-gfx-0.7.0.0@sha256:0e3270407550e4a67012d42d45a2df373d628d128e176913d1399f33896e0978,1084
diff --git a/tidal-vis.cabal b/tidal-vis.cabal
index ffda3b6..af1643e 100644
--- a/tidal-vis.cabal
+++ b/tidal-vis.cabal
@@ -56,15 +56,14 @@ library
                   , cairo
                   , colour
                   , containers
-                  , gloss
+		  , gloss
                   , hashable
                   , hosc
-                  , SDL
-                  , SDL-gfx
-                  , SDL-image
-                  , SDL-ttf
                   , mtl
                   , network
+		  , SDL
+		  , SDL-gfx
+		  , SDL-ttf
                   , tidal >= 1.0.15 && < 1.7
                   , time
                   , unagi-chan