diff --git a/.Rbuildignore b/.Rbuildignore
index 47ed739..fd18cfe 100755
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -29,3 +29,4 @@ this_data.rds
 \.png
 ^CRAN-RELEASE$
 ^Meta$
+^\.github$
diff --git a/.github/.gitignore b/.github/.gitignore
new file mode 100644
index 0000000..2d19fc7
--- /dev/null
+++ b/.github/.gitignore
@@ -0,0 +1 @@
+*.html
diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
new file mode 100644
index 0000000..eddfeab
--- /dev/null
+++ b/.github/workflows/R-CMD-check.yaml
@@ -0,0 +1,64 @@
+# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
+
+on:
+  push:
+    branches: [main, master, develop]
+  pull_request:
+
+name: R-CMD-check.yaml
+
+permissions: read-all
+
+jobs:
+  R-CMD-check:
+    runs-on: ${{ matrix.config.os }}
+
+    name: ${{ matrix.config.os }} (${{ matrix.config.r }})
+
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - {os: macOS-latest,   r: 'release'}
+          - {os: windows-latest, r: 'release'}
+          - {os: ubuntu-latest,   r: 'devel', http-user-agent: 'release'}
+          - {os: ubuntu-latest,   r: 'release'}
+          - {os: ubuntu-latest,   r: 'oldrel-1'}
+
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+      R_KEEP_PKG_SOURCE: yes
+      
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          use-public-rspm: true
+      
+      - name: Add cmdstanr repo
+        run: |
+          writeLines('options(repos = c(cmdstanr = "https://stan-dev.r-universe.dev", getOption(\"repos\")))', file("~/.Rprofile", "ab"))
+        shell: Rscript {0}
+      
+      - name: Install cmdstanr
+        run: |
+          Rscript -e 'install.packages("cmdstanr", repos = c("https://stan-dev.r-universe.dev", getOption("repos")))'
+      
+      - name: Fix toolchain
+        run: |
+          Rscript -e 'cmdstanr::check_cmdstan_toolchain(fix = TRUE)'
+      
+      - name: Install CmdStan
+        run: |
+          Rscript -e 'cmdstanr::install_cmdstan(cores = 1)'
+
+      - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: any::rcmdcheck
+          needs: check
+
+      - uses: r-lib/actions/check-r-package@v2
+        with:
+          upload-snapshots: true
+          build_args: 'c("--no-manual","--no-build-vignettes")'
diff --git a/DESCRIPTION b/DESCRIPTION
index 3bf1129..c435392 100755
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -13,7 +13,7 @@ Description: Offers item-response theory (IRT) ideal-point estimation for binary
 License: GPL
 Depends: 
     methods,
-    R (>= 3.4.0)
+    R (>= 3.5.0)
 Imports: 
     dplyr,
     svDialogs,
@@ -34,14 +34,15 @@ Imports:
     ggthemes,
     posterior,
     R.rsp,
-    Rcpp
+    Rcpp,
+    cmdstanr
 Suggests:
     loo,
-    lubridate,
-    cmdstanr
+    lubridate
 Encoding: UTF-8
 LazyData: true
 NeedsCompilation: yes
 SystemRequirements: GNU make
+Additional_repositories: https://stan-dev.r-universe.dev
 VignetteBuilder: R.rsp
 RoxygenNote: 7.3.2