diff --git a/.github/workflows/teamcity-test.yaml b/.github/workflows/teamcity-test.yaml
index f4bd764c996d..35fd11fcfc47 100644
--- a/.github/workflows/teamcity-test.yaml
+++ b/.github/workflows/teamcity-test.yaml
@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-java@v1
         with:
-          java-version: '13'
+          java-version: '11'
           java-package: jdk
       - uses: actions/cache@v2
         with:
diff --git a/.teamcity/components/settings.kt b/.teamcity/components/settings.kt
index 6d806b67552b..003609325961 100644
--- a/.teamcity/components/settings.kt
+++ b/.teamcity/components/settings.kt
@@ -5,7 +5,7 @@ var defaultStartHour = 0
 var defaultParallelism = 20
 
 // specifies the default version of Terraform Core which should be used for testing
-var defaultTerraformCoreVersion = "0.14.7"
+var defaultTerraformCoreVersion = "0.15.0"
 
 var locations = mapOf(
         "public" to LocationConfiguration("westeurope", "eastus2", "francecentral", false),