diff --git a/.github/workflows/appimage.yml b/.github/workflows/appimage.yml
index 4e81a4295..f966f6b22 100644
--- a/.github/workflows/appimage.yml
+++ b/.github/workflows/appimage.yml
@@ -10,7 +10,7 @@ on:
         required: false
 
 env:
-  JAVA_VERSION: 19
+  JAVA_VERSION: 20
 
 jobs:
   get-version:
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 681ba1f94..bf21af27c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -6,7 +6,7 @@ on:
     types: [labeled]
 
 env:
-  JAVA_VERSION: 19
+  JAVA_VERSION: 20
 
 defaults:
   run:
diff --git a/.github/workflows/debian.yml b/.github/workflows/debian.yml
index 700322c06..b2d2bf4c8 100644
--- a/.github/workflows/debian.yml
+++ b/.github/workflows/debian.yml
@@ -19,9 +19,11 @@ on:
         type: boolean
 
 env:
-  JAVA_VERSION: 19
-  OPENJFX_JMODS_AMD64: 'https://download2.gluonhq.com/openjfx/19.0.2.1/openjfx-19.0.2.1_linux-x64_bin-jmods.zip'
-  OPENJFX_JMODS_AARCH64: 'https://download2.gluonhq.com/openjfx/19.0.2.1/openjfx-19.0.2.1_linux-aarch64_bin-jmods.zip'
+  JAVA_VERSION: 20
+  OPENJFX_JMODS_AMD64: 'https://download2.gluonhq.com/openjfx/20.0.1/openjfx-20.0.1_linux-x64_bin-jmods.zip'
+  JMODS_AMD64_HASH: '0b244b08354dc5e1b639765fd0858cbc154774e9cb05467c4111b7c63d3b3721'
+  OPENJFX_JMODS_AARCH64: 'https://download2.gluonhq.com/openjfx/20.0.1/openjfx-20.0.1_linux-aarch64_bin-jmods.zip'
+  JMODS_AARCH64_HASH: '4b0dd30282c067aa07fe840374115b5ec5dcfd8dc479ebd2231dfdb6a518b3b3'
 
 jobs:
   build:
@@ -58,9 +60,19 @@ jobs:
         id: download-jmods
         run: |
           curl -L ${{ env.OPENJFX_JMODS_AMD64 }} -o openjfx-amd64.zip
+          echo "${{ env.JMODS_AMD64_HASH }} openjfx-amd64.zip" | sha256sum -c
+          if [ $? != 0 ]; then
+            echo "Wrong checksum of JMOD archive downloaded from ${{ env.OPENJFX_JMODS_AMD64 }}.";
+            exit 1
+          fi
           mkdir -p jmods/amd64
           unzip -j openjfx-amd64.zip \*/javafx.base.jmod \*/javafx.controls.jmod \*/javafx.fxml.jmod \*/javafx.graphics.jmod -d jmods/amd64
           curl -L ${{ env.OPENJFX_JMODS_AARCH64 }} -o openjfx-aarch64.zip
+          echo "${{ env.JMODS_AARCH64_HASH }} openjfx-aarch64.zip" | sha256sum -c
+          if [ $? != 0 ]; then
+            echo "Wrong checksum of JMOD archive downloaded from ${{ env.OPENJFX_JMODS_AARCH64 }}.";
+            exit 1
+          fi
           mkdir -p jmods/aarch64
           unzip -j openjfx-aarch64.zip \*/javafx.base.jmod \*/javafx.controls.jmod \*/javafx.fxml.jmod \*/javafx.graphics.jmod -d jmods/aarch64
       - name: Ensure major jfx version in pom and in jmods is the same
diff --git a/.github/workflows/get-version.yml b/.github/workflows/get-version.yml
index 5cffb56fb..d8684dc20 100644
--- a/.github/workflows/get-version.yml
+++ b/.github/workflows/get-version.yml
@@ -22,7 +22,7 @@ on:
         value: ${{ jobs.determine-version.outputs.type }}
 
 env:
-  JAVA_VERSION: 19
+  JAVA_VERSION: 20
   JAVA_DIST: 'temurin'
   JAVA_CACHE: 'maven'
 
diff --git a/.github/workflows/mac-dmg.yml b/.github/workflows/mac-dmg.yml
index 27320dba8..bad80138b 100644
--- a/.github/workflows/mac-dmg.yml
+++ b/.github/workflows/mac-dmg.yml
@@ -10,7 +10,7 @@ on:
         required: false
 
 env:
-  JAVA_VERSION: 19
+  JAVA_VERSION: 20
 
 jobs:
   get-version:
diff --git a/.github/workflows/pullrequest.yml b/.github/workflows/pullrequest.yml
index 48f7bd185..73a21edde 100644
--- a/.github/workflows/pullrequest.yml
+++ b/.github/workflows/pullrequest.yml
@@ -4,7 +4,7 @@ on:
   pull_request:
 
 env:
-  JAVA_VERSION: 19
+  JAVA_VERSION: 20
 
 defaults:
   run:
diff --git a/.github/workflows/release-check.yml b/.github/workflows/release-check.yml
index 7309cb852..481861540 100644
--- a/.github/workflows/release-check.yml
+++ b/.github/workflows/release-check.yml
@@ -7,7 +7,7 @@ on:
       - 'hotfix/**'
 
 env:
-  JAVA_VERSION: 19
+  JAVA_VERSION: 20
 
 defaults:
   run:
diff --git a/.github/workflows/win-exe.yml b/.github/workflows/win-exe.yml
index 45ce36c2e..df67c1dcb 100644
--- a/.github/workflows/win-exe.yml
+++ b/.github/workflows/win-exe.yml
@@ -14,11 +14,11 @@ on:
 
 
 env:
-  JAVA_VERSION: 19
+  JAVA_VERSION: 20
   JAVA_DIST: 'temurin'
   JAVA_CACHE: 'maven'
-  JFX_JMODS_URL: 'https://download2.gluonhq.com/openjfx/19.0.2.1/openjfx-19.0.2.1_windows-x64_bin-jmods.zip'
-  JFX_JMODS_HASH: 'B7CF2CAD2468842B3B78D99F6C0555771499A36FA1F1EE3DD1B9A4597F1FAB86'
+  JFX_JMODS_URL: 'https://download2.gluonhq.com/openjfx/20.0.1/openjfx-20.0.1_windows-x64_bin-jmods.zip'
+  JFX_JMODS_HASH: 'D00767334C43B8832B5CF10267D34CA8F563D187C4655B73EB6020DD79C054B5'
 
 defaults:
   run:
@@ -51,7 +51,7 @@ jobs:
         run: |
           curl --output jfxjmods.zip -L "${{ env.JFX_JMODS_URL }}"
           if(!(Get-FileHash -Path jfxjmods.zip -Algorithm SHA256).Hash.equals("${{ env.JFX_JMODS_HASH }}")) {
-            exit 1;
+            throw "Wrong checksum of JMOD archive downloaded from ${{ env.JFX_JMODS_URL }}.";
           }
           Expand-Archive -Path jfxjmods.zip -DestinationPath jfxjmods
           Get-ChildItem -Path jfxjmods -Recurse -Filter "*.jmod" | ForEach-Object { Move-Item -Path $_ -Destination $_.Directory.Parent}