diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7aba7fe..a60cf9b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,7 +29,10 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         scala: [2.13, 2.12]
-        java: [temurin@11]
+        java: [temurin@8, temurin@11]
+        exclude:
+          - scala: 2.12
+            java: temurin@11
     runs-on: ${{ matrix.os }}
     timeout-minutes: 60
     steps:
@@ -38,6 +41,19 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Setup Java (temurin@8)
+        id: setup-java-temurin-8
+        if: matrix.java == 'temurin@8'
+        uses: actions/setup-java@v3
+        with:
+          distribution: temurin
+          java-version: 8
+          cache: sbt
+
+      - name: sbt update
+        if: matrix.java == 'temurin@8' && steps.setup-java-temurin-8.outputs.cache-hit == 'false'
+        run: sbt +update
+
       - name: Setup Java (temurin@11)
         id: setup-java-temurin-11
         if: matrix.java == 'temurin@11'
@@ -55,22 +71,22 @@ jobs:
         run: sbt githubWorkflowCheck
 
       - name: Check headers and formatting
-        if: matrix.java == 'temurin@11' && matrix.os == 'ubuntu-latest'
+        if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-latest'
         run: sbt '++ ${{ matrix.scala }}' headerCheckAll scalafmtCheckAll 'project /' scalafmtSbtCheck
 
       - name: Check scalafix lints
-        if: matrix.java == 'temurin@11' && matrix.os == 'ubuntu-latest'
+        if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-latest'
         run: sbt '++ ${{ matrix.scala }}' 'scalafixAll --check'
 
       - name: Test
         run: sbt '++ ${{ matrix.scala }}' test
 
       - name: Check binary compatibility
-        if: matrix.java == 'temurin@11' && matrix.os == 'ubuntu-latest'
+        if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-latest'
         run: sbt '++ ${{ matrix.scala }}' mimaReportBinaryIssues
 
       - name: Generate API documentation
-        if: matrix.java == 'temurin@11' && matrix.os == 'ubuntu-latest'
+        if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-latest'
         run: sbt '++ ${{ matrix.scala }}' doc
 
       - name: Make target directories
@@ -95,7 +111,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        java: [temurin@11]
+        java: [temurin@8]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
@@ -103,6 +119,19 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Setup Java (temurin@8)
+        id: setup-java-temurin-8
+        if: matrix.java == 'temurin@8'
+        uses: actions/setup-java@v3
+        with:
+          distribution: temurin
+          java-version: 8
+          cache: sbt
+
+      - name: sbt update
+        if: matrix.java == 'temurin@8' && steps.setup-java-temurin-8.outputs.cache-hit == 'false'
+        run: sbt +update
+
       - name: Setup Java (temurin@11)
         id: setup-java-temurin-11
         if: matrix.java == 'temurin@11'
@@ -166,7 +195,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        java: [temurin@11]
+        java: [temurin@8]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
@@ -174,6 +203,19 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Setup Java (temurin@8)
+        id: setup-java-temurin-8
+        if: matrix.java == 'temurin@8'
+        uses: actions/setup-java@v3
+        with:
+          distribution: temurin
+          java-version: 8
+          cache: sbt
+
+      - name: sbt update
+        if: matrix.java == 'temurin@8' && steps.setup-java-temurin-8.outputs.cache-hit == 'false'
+        run: sbt +update
+
       - name: Setup Java (temurin@11)
         id: setup-java-temurin-11
         if: matrix.java == 'temurin@11'
@@ -198,7 +240,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        java: [temurin@11]
+        java: [temurin@8]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
@@ -206,6 +248,19 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Setup Java (temurin@8)
+        id: setup-java-temurin-8
+        if: matrix.java == 'temurin@8'
+        uses: actions/setup-java@v3
+        with:
+          distribution: temurin
+          java-version: 8
+          cache: sbt
+
+      - name: sbt update
+        if: matrix.java == 'temurin@8' && steps.setup-java-temurin-8.outputs.cache-hit == 'false'
+        run: sbt +update
+
       - name: Setup Java (temurin@11)
         id: setup-java-temurin-11
         if: matrix.java == 'temurin@11'
diff --git a/build.sbt b/build.sbt
index 9da807d..d40ad67 100644
--- a/build.sbt
+++ b/build.sbt
@@ -21,7 +21,10 @@ val scalafixV = "0.11.1"
 
 ThisBuild / crossScalaVersions := Seq(Scala213, "2.12.18")
 ThisBuild / scalaVersion := Scala213 // the default Scala
-ThisBuild / githubWorkflowJavaVersions := Seq(JavaSpec.temurin("11"))
+ThisBuild / githubWorkflowJavaVersions := Seq(
+  JavaSpec.temurin("8"),
+  JavaSpec.temurin("11")
+)
 
 // semantic db settings
 ThisBuild / semanticdbEnabled := true