diff --git a/.github/workflows/spellcheck.yml b/.github/workflows/spellcheck.yml
new file mode 100644
index 0000000..7ebc1ff
--- /dev/null
+++ b/.github/workflows/spellcheck.yml
@@ -0,0 +1,23 @@
+# adapted from https://github.com/JuliaDocs/Documenter.jl/blob/master/.github/workflows/SpellCheck.yml
+# see docs at https://github.com/crate-ci/typos
+name: Spell Check
+on: [pull_request]
+
+jobs:
+  typos-check:
+    name: Spell Check with Typos
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Actions Repository
+        uses: actions/checkout@v4
+      - name: Check spelling
+        uses: crate-ci/typos@master
+        # don't fail on typos in files not impacted by this PR
+        continue-on-error: true
+        with:
+            config: _typos.toml
+            write_changes: true
+      - uses: reviewdog/action-suggester@v1
+        with:
+          tool_name: Typos
+          fail_on_error: true
diff --git a/_typos.toml b/_typos.toml
new file mode 100644
index 0000000..f8d9752
--- /dev/null
+++ b/_typos.toml
@@ -0,0 +1,20 @@
+# https://github.com/crate-ci/typos#false-positives
+[default]
+
+[default.extend-identifiers]
+Lik = "Lik"
+missings = "missings"
+
+[default.extend-words]
+Lik = "Lik"
+missings = "missings"
+
+[type.package_toml]
+# Don't check spellings in these files
+extend-glob = ["Manifest.toml", "Project.toml"]
+check-file = false
+
+[type.bib]
+# contain lots of names, which are a great spot for false positives
+extend-glob = ["*.bib"]
+check-file = false
diff --git a/docs/src/api.md b/docs/src/api.md
index e686d16..9fed7ef 100644
--- a/docs/src/api.md
+++ b/docs/src/api.md
@@ -181,7 +181,7 @@ These are especially useful for diagnostics and model checking.
 The methods for `qqnorm` and `qqplot` are implemented using [Makie recipes](https://makie.juliaplots.org/v0.15.0/recipes.html).
 In other words, these are convenience wrappers for calling the relevant plotting methods on `residuals(model)`.
 
-Specify the type of line on the QQ plots with the `qqline` keyword-argument. The default for `qqnorm` is `:fitrobust`, which delivers an R-style line connecting the first and third quartiles. The default for `qqplot` is `:identity`, which plots the line with slope = 1 and intercept = 0. The final possiblity is `:fit`, which plots the line of best fit (i.e. regressing the quantiles of the residuals onto the quantiles of the reference distribution).
+Specify the type of line on the QQ plots with the `qqline` keyword-argument. The default for `qqnorm` is `:fitrobust`, which delivers an R-style line connecting the first and third quartiles. The default for `qqplot` is `:identity`, which plots the line with slope = 1 and intercept = 0. The final possibility is `:fit`, which plots the line of best fit (i.e. regressing the quantiles of the residuals onto the quantiles of the reference distribution).
 
 The reference distribution for `qqnorm` is the standard normal, which differs from [the behavior in previous versions of Makie](https://github.com/JuliaPlots/Makie.jl/pull/1277).
 
diff --git a/src/ridge.jl b/src/ridge.jl
index 5e39950..9c0bce7 100644
--- a/src/ridge.jl
+++ b/src/ridge.jl
@@ -15,7 +15,7 @@ Create a ridge plot for the bootstrap samples of the fixed effects.
 
 Densities are normalized so that the maximum density is always 1.
 
-The highest density interval correspoding to `conf_level` is marked with a bar at the bottom of each density.
+The highest density interval corresponding to `conf_level` is marked with a bar at the bottom of each density.
 Setting `conf_level=missing` removes the markings for the highest density interval.
 
 !!! note
diff --git a/src/ridge2d.jl b/src/ridge2d.jl
index 6a611e7..6703728 100644
--- a/src/ridge2d.jl
+++ b/src/ridge2d.jl
@@ -27,7 +27,7 @@ function ridge2d!(f::Union{Makie.FigureLike,Makie.GridLayout}, bs::MixedModelBoo
     isempty(cnames) &&
         throw(ArgumentError("No parameters $ptype found."))
     length(cnames) == 1 &&
-        throw(ArgumentError("Only 1 $ptype-paramater found: 2D plots require at least 2."))
+        throw(ArgumentError("Only 1 $ptype-parameter found: 2D plots require at least 2."))
     splomaxes!(f, cnames, _ridge2d_panel!, Symbol.(cnames), tbl)
     return f
 end
diff --git a/test/runtests.jl b/test/runtests.jl
index 5157ccb..732a8f8 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -144,7 +144,7 @@ end
 @testset "ridge2d" begin
     @test_throws(ArgumentError("No parameters x found."),
                  ridge2d(b1; ptype=:x))
-    @test_throws(ArgumentError("Only 1 ρ-paramater found: 2D plots require at least 2."),
+    @test_throws(ArgumentError("Only 1 ρ-parameter found: 2D plots require at least 2."),
                  ridge2d(b1; ptype=:ρ))
     save(joinpath(OUTDIR, "ridge2d_beta.png"), ridge2d(b1))
     save(joinpath(OUTDIR, "ridge2d_sigma.png"), ridge2d(b1; ptype=:σ))