diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 6db1e9a..8bb96fb 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -6,7 +6,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        ghc: ['8.4.4', '8.6.5', '8.8.4', '8.10.2']
+        ghc: ['8.4.4', '8.6.5', '8.8.4', '8.10.4']
         os: [ubuntu-latest]
         include:
           - ghc: '8.4.4'
@@ -16,11 +16,11 @@ jobs:
             resolver: 'lts-14.27'
             flags: ''
           - ghc: '8.8.4'
-            resolver: 'lts-16.27'
+            resolver: 'lts-16.31'
             coveralls: true
             flags: '--coverage'
-          - ghc: '8.10.2'
-            resolver: 'nightly-2020-11-01'
+          - ghc: '8.10.4'
+            resolver: 'lts-17.10'
             flags: ''
     steps:
       - uses: actions/checkout@v2
diff --git a/.travis.yml b/.travis.yml
index d3f1ba7..acd6d46 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -34,9 +34,9 @@ matrix:
     - env: CABALVER=2.4 GHCVER=8.8.4
       compiler: ": #GHC 8.8.4"
       addons: {apt: {packages: [cabal-install-2.4,ghc-8.8.4,alex-3.1.7,happy-1.19.5], sources: [hvr-ghc]}}
-    - env: CABALVER=2.4 GHCVER=8.10.2
-      compiler: ": #GHC 8.10.2"
-      addons: {apt: {packages: [cabal-install-2.4,ghc-8.10.2,alex-3.1.7,happy-1.19.5], sources: [hvr-ghc]}}
+    - env: CABALVER=2.4 GHCVER=8.10.4
+      compiler: ": #GHC 8.10.4"
+      addons: {apt: {packages: [cabal-install-2.4,ghc-8.10.4,alex-3.1.7,happy-1.19.5], sources: [hvr-ghc]}}
 
 before_install:
  - unset CC
diff --git a/pseudo-boolean.cabal b/pseudo-boolean.cabal
index 924a9ae..932b73c 100644
--- a/pseudo-boolean.cabal
+++ b/pseudo-boolean.cabal
@@ -29,7 +29,7 @@ tested-with:
    GHC ==8.4.4
    GHC ==8.6.5
    GHC ==8.8.4
-   GHC ==8.10.2
+   GHC ==8.10.4
 
 source-repository head
   type:     git
diff --git a/stack.yaml b/stack.yaml
index b047170..bbedd05 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -15,7 +15,7 @@
 # resolver:
 #  name: custom-snapshot
 #  location: "./custom-snapshot.yaml"
-resolver: lts-15.9
+resolver: lts-17.10
 
 # User packages to be built.
 # Various formats can be used as shown in the example below.