diff --git a/.github/workflows/build-latest.yml b/.github/workflows/build-latest.yml
index 40536828..e31aa028 100644
--- a/.github/workflows/build-latest.yml
+++ b/.github/workflows/build-latest.yml
@@ -41,7 +41,7 @@ jobs:
       soroban_tools_ref: v0.4.0
       test_matrix: |
         {
-          "network": ["testnet", "pubnet", "local"],
+          "network": ["pubnet", "local"],
           "options": ["", "--enable-horizon-captive-core"]
         }
 
@@ -54,11 +54,13 @@ jobs:
       arch: arm64
       tag: latest-arm64
       core_ref: v19.14.0
+      core_build_runner_type: ubuntu-latest-16-cores
       go_ref: horizon-v2.26.1
       soroban_tools_ref: v0.4.0
+      soroban_rpc_build_runner_type: ubuntu-latest-16-cores
       test_matrix: |
         {
-          "network": ["testnet", "pubnet", "local"],
+          "network": ["pubnet", "local"],
           "options": ["", "--enable-horizon-captive-core"]
         }
 
diff --git a/.github/workflows/build-soroban-dev.yml b/.github/workflows/build-soroban-dev.yml
index 7de5beb5..2be7b8f8 100644
--- a/.github/workflows/build-soroban-dev.yml
+++ b/.github/workflows/build-soroban-dev.yml
@@ -6,7 +6,7 @@ name: Soroban-Dev
 on:
   push:
     branches:
-      - master
+    - master
   pull_request:
 
 # Prevent more than one build of this workflow for a branch to be running at the
@@ -18,13 +18,14 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+
   complete:
     if: always()
     needs: [manifest]
     runs-on: ubuntu-latest
     steps:
-      - if: contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled')
-        run: exit 1
+    - if: contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled')
+      run: exit 1
 
   amd64:
     uses: ./.github/workflows/build.yml
@@ -34,11 +35,10 @@ jobs:
     with:
       arch: amd64
       tag: soroban-dev-amd64
-      core_ref: v20.0.0rc1
-      core_configure_flags: --disable-tests
+      core_ref: v20.0.0rc2
       core_supports_testing_soroban_high_limit_override: "true"
       go_ref: horizon-v2.27.0-rc1
-      soroban_tools_ref: v20.0.0-rc2
+      soroban_tools_ref: v20.0.0-rc3
       test_matrix: |
         {
           "network": ["local"],
@@ -53,12 +53,11 @@ jobs:
     with:
       arch: arm64
       tag: soroban-dev-arm64
-      core_ref: v20.0.0rc1
-      core_configure_flags: --disable-tests
+      core_ref: v20.0.0rc2
       core_supports_testing_soroban_high_limit_override: "true"
       core_build_runner_type: ubuntu-latest-16-cores
       go_ref: horizon-v2.27.0-rc1
-      soroban_tools_ref: v20.0.0-rc2
+      soroban_tools_ref: v20.0.0-rc3
       soroban_rpc_build_runner_type: ubuntu-latest-16-cores
       test_matrix: |
         {
diff --git a/.github/workflows/build-testing.yml b/.github/workflows/build-testing.yml
index 78fcb5c6..c7869102 100644
--- a/.github/workflows/build-testing.yml
+++ b/.github/workflows/build-testing.yml
@@ -37,9 +37,10 @@ jobs:
     with:
       arch: amd64
       tag: testing-amd64
-      core_ref: v20.0.0rc1
+      core_ref: v20.0.0rc2
+      core_supports_testing_soroban_high_limit_override: "true"
       go_ref: horizon-v2.27.0-rc1
-      soroban_tools_ref: v20.0.0-rc2
+      soroban_tools_ref: v20.0.0-rc3
       test_matrix: |
         {
           "network": ["testnet", "pubnet", "local"],
@@ -60,9 +61,12 @@ jobs:
     with:
       arch: arm64
       tag: testing-arm64
-      core_ref: v20.0.0rc1
+      core_ref: v20.0.0rc2
+      core_supports_testing_soroban_high_limit_override: "true"
+      core_build_runner_type: ubuntu-latest-16-cores
       go_ref: horizon-v2.27.0-rc1
-      soroban_tools_ref: v20.0.0-rc2
+      soroban_tools_ref: v20.0.0-rc3
+      soroban_rpc_build_runner_type: ubuntu-latest-16-cores
       test_matrix: |
         {
           "network": ["testnet", "pubnet", "local"],
diff --git a/Makefile b/Makefile
index 937a8aa5..fdfc0592 100644
--- a/Makefile
+++ b/Makefile
@@ -25,16 +25,17 @@ build-latest:
 
 build-testing:
 	$(MAKE) build TAG=testing \
-		CORE_REF=v20.0.0rc1 \
+		CORE_REF=v20.0.0rc2 \
+		CORE_SUPPORTS_TESTING_SOROBAN_HIGH_LIMIT_OVERRIDE=true \
 		HORIZON_REF=horizon-v2.27.0-rc1 \
-		SOROBAN_RPC_REF=v20.0.0-rc2
+		SOROBAN_RPC_REF=v20.0.0-rc3
 
 build-soroban-dev:
 	$(MAKE) build TAG=soroban-dev \
-		CORE_REF=v20.0.0rc1 \
+		CORE_REF=v20.0.0rc2 \
 		CORE_SUPPORTS_TESTING_SOROBAN_HIGH_LIMIT_OVERRIDE=true \
 		HORIZON_REF=horizon-v2.27.0-rc1 \
-		SOROBAN_RPC_REF=v20.0.0-rc2
+		SOROBAN_RPC_REF=v20.0.0-rc3
 
 build:
 	$(MAKE) -j 4 build-deps