diff --git a/.github/workflows/QtApng.yml b/.github/workflows/QtApng.yml
index 7cf568e..c810e26 100644
--- a/.github/workflows/QtApng.yml
+++ b/.github/workflows/QtApng.yml
@@ -48,6 +48,7 @@ jobs:
           cache: true
           version: ${{ matrix.vers }}
           arch: ${{ matrix.arch }}
+          aqtversion: '==3.1.19'
 
       - name: Build QtApng
         run: pwsh pwsh/buildapng.ps1
diff --git a/.github/workflows/kimageformats.yml b/.github/workflows/kimageformats.yml
index f011793..6a035aa 100644
--- a/.github/workflows/kimageformats.yml
+++ b/.github/workflows/kimageformats.yml
@@ -49,6 +49,7 @@ jobs:
           cache: true
           version: ${{ matrix.vers }}
           arch: ${{ matrix.arch }}
+          aqtversion: '==3.1.19'
 
       # Download and build vcpkg, without installing any port. If content is cached already, it is a no-op.
       - name: Setup vcpkg