diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 24b703d..fccac2a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,12 +29,9 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         scala:
-          - 2.12.15
-          - 2.12.17
           - 2.12.18
           - 2.12.19
-          - 2.13.10
-          - 2.13.11
+          - 2.12.20
           - 2.13.12
           - 2.13.13
           - 2.13.14
@@ -166,26 +163,6 @@ jobs:
             ~/Library/Caches/Coursier/v1
           key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
 
-      - name: Download target directories (2.12.15)
-        uses: actions/download-artifact@v3
-        with:
-          name: target-${{ matrix.os }}-${{ matrix.java }}-2.12.15
-
-      - name: Inflate target directories (2.12.15)
-        run: |
-          tar xf targets.tar
-          rm targets.tar
-
-      - name: Download target directories (2.12.17)
-        uses: actions/download-artifact@v3
-        with:
-          name: target-${{ matrix.os }}-${{ matrix.java }}-2.12.17
-
-      - name: Inflate target directories (2.12.17)
-        run: |
-          tar xf targets.tar
-          rm targets.tar
-
       - name: Download target directories (2.12.18)
         uses: actions/download-artifact@v3
         with:
@@ -206,22 +183,12 @@ jobs:
           tar xf targets.tar
           rm targets.tar
 
-      - name: Download target directories (2.13.10)
-        uses: actions/download-artifact@v3
-        with:
-          name: target-${{ matrix.os }}-${{ matrix.java }}-2.13.10
-
-      - name: Inflate target directories (2.13.10)
-        run: |
-          tar xf targets.tar
-          rm targets.tar
-
-      - name: Download target directories (2.13.11)
+      - name: Download target directories (2.12.20)
         uses: actions/download-artifact@v3
         with:
-          name: target-${{ matrix.os }}-${{ matrix.java }}-2.13.11
+          name: target-${{ matrix.os }}-${{ matrix.java }}-2.12.20
 
-      - name: Inflate target directories (2.13.11)
+      - name: Inflate target directories (2.12.20)
         run: |
           tar xf targets.tar
           rm targets.tar
diff --git a/.mergify.yml b/.mergify.yml
index c67c3b5..f075499 100644
--- a/.mergify.yml
+++ b/.mergify.yml
@@ -3,12 +3,9 @@ pull_request_rules:
   conditions:
   - author=scala-steward
   - body~=labels:.*semver-patch.*
-  - status-success="Build and Test (ubuntu-latest, 2.12.15, temurin@8)"
-  - status-success="Build and Test (ubuntu-latest, 2.12.17, temurin@8)"
   - status-success="Build and Test (ubuntu-latest, 2.12.18, temurin@8)"
   - status-success="Build and Test (ubuntu-latest, 2.12.19, temurin@8)"
-  - status-success="Build and Test (ubuntu-latest, 2.13.10, temurin@8)"
-  - status-success="Build and Test (ubuntu-latest, 2.13.11, temurin@8)"
+  - status-success="Build and Test (ubuntu-latest, 2.12.20, temurin@8)"
   - status-success="Build and Test (ubuntu-latest, 2.13.12, temurin@8)"
   - status-success="Build and Test (ubuntu-latest, 2.13.13, temurin@8)"
   - status-success="Build and Test (ubuntu-latest, 2.13.14, temurin@8)"
diff --git a/README.md b/README.md
index db51ff3..4114b88 100644
--- a/README.md
+++ b/README.md
@@ -39,10 +39,10 @@ In scala-cli:
 (note: versions before `0.3.8` were published under the `com.kubukoz` organization instead of `org.polyvariant`)
 
 <!-- SCALA VERSIONS START -->
-The plugin is currently published for the following 24 Scala versions:
+The plugin is currently published for the following 21 Scala versions:
 
-- 2.12.15, 2.12.17, 2.12.18, 2.12.19
-- 2.13.10, 2.13.11, 2.13.12, 2.13.13, 2.13.14
+- 2.12.18, 2.12.19, 2.12.20
+- 2.13.12, 2.13.13, 2.13.14
 - 3.1.3
 - 3.2.2
 - 3.3.0-RC6, 3.3.0, 3.3.1-RC1, 3.3.1, 3.3.2-RC1, 3.3.3
diff --git a/scala-versions b/scala-versions
index abd8417..5098858 100644
--- a/scala-versions
+++ b/scala-versions
@@ -1,9 +1,6 @@
-2.12.15
-2.12.17
 2.12.18
 2.12.19
-2.13.10
-2.13.11
+2.12.20
 2.13.12
 2.13.13
 2.13.14