diff --git a/.github/workflows/bench_pr.yml b/.github/workflows/bench_pr.yml
index 440a5f79..961f3520 100644
--- a/.github/workflows/bench_pr.yml
+++ b/.github/workflows/bench_pr.yml
@@ -13,13 +13,15 @@ jobs:
         go-version: 1.22
       id: go
 
-    - name: Check out code 
+    - name: Check out code
       uses: actions/checkout@v1
 
     - name: Get dependencies
-      run: | 
+      run: |
+            sudo apt-get update
+            sudo apt-get install -y pkg-config swig libcharls-dev libdcmtk-dev libopenjp2-7-dev
             go mod download
-  
+
     - name: Benchmark against GITHUB_BASE_REF
       run: |
        go install golang.org/x/perf/cmd/benchstat@latest
@@ -32,4 +34,4 @@ jobs:
        git log -1 --format="%H"
        go test -bench=. -benchmem -benchtime=10x -count=7 > $HOME/old.txt
        $GOBIN/benchstat $HOME/old.txt $HOME/new.txt
-       
+
diff --git a/.github/workflows/bench_push.yml b/.github/workflows/bench_push.yml
index f3cc605f..a037a65c 100644
--- a/.github/workflows/bench_push.yml
+++ b/.github/workflows/bench_push.yml
@@ -13,13 +13,15 @@ jobs:
         go-version: 1.22
       id: go
 
-    - name: Check out code 
+    - name: Check out code
       uses: actions/checkout@v1
 
     - name: Get dependencies
-      run: | 
+      run: |
+            sudo apt-get update
+            sudo apt-get install -y pkg-config swig libcharls-dev libdcmtk-dev libopenjp2-7-dev
             go mod download
-  
+
     - name: Benchmark (against HEAD~1)
       run: |
        go install golang.org/x/perf/cmd/benchstat@latest
diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index bdd3fe4d..65d16df2 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -13,20 +13,22 @@ jobs:
         go-version: 1.22
       id: go
 
-    - name: Check out code 
+    - name: Check out code
       uses: actions/checkout@v1
 
     - name: Get dependencies
       run: |
+            sudo apt-get update
+            sudo apt-get install -y pkg-config swig libcharls-dev libdcmtk-dev libopenjp2-7-dev
             go mod download
 
 
     - name: Build
       run: |
             make build-fast
-   
+
     - name: Test
       run: |
             make test
-       
+
 
diff --git a/pkg/codec/README.md b/pkg/codec/README.md
index 7ab23ec3..dd3f3143 100644
--- a/pkg/codec/README.md
+++ b/pkg/codec/README.md
@@ -30,10 +30,10 @@ import (
 )
 
 func main() {
-	dataset, err := dicom.ParseFile("testdata/1.dcm", nil)
-	pixelDataElem, err := dataset.FindElementByTag(tag.PixelData)
-	pixelData := dicom.MustGetPixelDataInfo(pixelDataElem.Value)
-	encapsulatedFrame, err := pixelData.Frames[0].GetEncapsulatedFrame()
+    dataset, err := dicom.ParseFile("testdata/1.dcm", nil)
+    pixelDataElem, err := dataset.FindElementByTag(tag.PixelData)
+    pixelData := dicom.MustGetPixelDataInfo(pixelDataElem.Value)
+    encapsulatedFrame, err := pixelData.Frames[0].GetEncapsulatedFrame()
     image, err = encapsulatedFrame.GetImage()
     ...
 }
diff --git a/pkg/codec/lib.go b/pkg/codec/lib.go
index af7bd2b5..7d99714b 100644
--- a/pkg/codec/lib.go
+++ b/pkg/codec/lib.go
@@ -2,5 +2,7 @@
 // Copyright (c) 2023 Segmed Inc.
 package codec
 
-// #cgo pkg-config: libopenjp2 dcmtk charls
+// #cgo pkg-config: libopenjp2 charls
+// #cgo darwin pkg-config: dcmtk
+// #cgo linux LDFLAGS: -ldcmjpeg
 import "C"
diff --git a/pkg/codec/testdata/data_details.md b/pkg/codec/testdata/data_details.md
index a7e54155..c38b86f5 100644
--- a/pkg/codec/testdata/data_details.md
+++ b/pkg/codec/testdata/data_details.md
@@ -28,5 +28,5 @@ be mentioned in one of them for brevity.
     dcmdump --write-pixel ../pkg/codec/testdata/ 3_jpeg.dcm
     ```
 
-#### Files a1_mono.jls and a1_mono.ppm
+#### Files a1_mono.j2c and a1_mono.ppm
 These files were sourced from [openjpeg-data](https://github.com/uclouvain/openjpeg-data)