diff --git a/.github/workflows/ethdebug.yml b/.github/workflows/ethdebug.yml
index c90884c1de..9ee0788c60 100644
--- a/.github/workflows/ethdebug.yml
+++ b/.github/workflows/ethdebug.yml
@@ -18,7 +18,7 @@ on:
         required: true
       soldb_ref:
         description: SolDB ref to build
-        default: main
+        default: v0.3.0
         required: true
 
 concurrency:
@@ -28,7 +28,7 @@ concurrency:
 env:
   FOUNDRY_VERSION: v1.0.0
   SOLIDITY_REF: ${{ github.event.inputs.solidity_ref || 'develop' }}
-  SOLDB_REF: ${{ github.event.inputs.soldb_ref || 'main' }}
+  SOLDB_REF: ${{ github.event.inputs.soldb_ref || 'v0.3.0' }}
 
 jobs:
   conformance:
diff --git a/packages/conformance/src/adapters/soldb.ts b/packages/conformance/src/adapters/soldb.ts
index bf319791dc..ff2f2401ee 100644
--- a/packages/conformance/src/adapters/soldb.ts
+++ b/packages/conformance/src/adapters/soldb.ts
@@ -76,8 +76,11 @@ export function observeSourceBreakpoint(
   target: string,
 ): { set: boolean; hit: boolean; stoppedAtTarget: boolean } {
   return {
-    set: result.stdout.includes(`Breakpoint set at ${target}, PC`),
-    hit: result.stdout.includes("Breakpoint hit at step"),
+    // SolDB numbers breakpoints, e.g. `Breakpoint #1 set at Counter.sol:8` and
+    // `Breakpoint #1 hit at step 88, Counter.sol:8, PC 558`, so match the stable
+    // fragments rather than an exact, unnumbered prefix.
+    set: result.stdout.includes(`set at ${target}`),
+    hit: /Breakpoint #\d+ hit at step/.test(result.stdout),
     stoppedAtTarget: result.stdout.includes(`${target}, PC`),
   };
 }