diff --git a/.github/workflows/bigquery-integration.yml b/.github/workflows/bigquery-integration.yml
index 011c2a1..886fc9f 100644
--- a/.github/workflows/bigquery-integration.yml
+++ b/.github/workflows/bigquery-integration.yml
@@ -33,7 +33,7 @@ jobs:
     name: Code Coverage IT Tests
     strategy:
       matrix:
-        scala: [2.12.20, 2.13.16]
+        scala: [2.12.21, 2.13.16]
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
diff --git a/.github/workflows/ci-tests.yml b/.github/workflows/ci-tests.yml
index 231949f..f86d73e 100644
--- a/.github/workflows/ci-tests.yml
+++ b/.github/workflows/ci-tests.yml
@@ -25,7 +25,7 @@ jobs:
     name: Code Coverage
     strategy:
       matrix:
-        scala: [2.12.20, 2.13.16]
+        scala: [2.12.21, 2.13.16]
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
diff --git a/build.sbt b/build.sbt
index 2931945..1f60e8f 100644
--- a/build.sbt
+++ b/build.sbt
@@ -5,7 +5,7 @@ lazy val projectName = "big-data-types"
 name := projectName
 
 lazy val scala213 = "2.13.16"
-lazy val scala212 = "2.12.20"
+lazy val scala212 = "2.12.21"
 lazy val scala3 = "3.3.3"
 lazy val supportedScalaVersions = List(scala3, scala213, scala212)
 scalaVersion := scala213