diff --git a/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/ReducedClasspathJavaLibraryBuilder.java b/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/ReducedClasspathJavaLibraryBuilder.java
index 17a1f44a7e09b4..6eabd414ac5fac 100644
--- a/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/ReducedClasspathJavaLibraryBuilder.java
+++ b/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/ReducedClasspathJavaLibraryBuilder.java
@@ -67,6 +67,7 @@ BlazeJavacResult compileSources(JavaLibraryBuildRequest build, JavacRunner javac
             .toBuilder()
             .transitiveClasspathLength(build.getClassPath().size())
             .reducedClasspathLength(compressedClasspath.size())
+            .minClasspathLength(build.getDependencyModule().getUsedClasspath().size())
             .transitiveClasspathFallback(fallback);
     build.getProcessors().stream()
         .map(p -> p.substring(p.lastIndexOf('.') + 1))
diff --git a/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/javac/plugins/dependency/DependencyModule.java b/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/javac/plugins/dependency/DependencyModule.java
index 75b36ba7029cdc..3aa1a499a70e83 100644
--- a/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/javac/plugins/dependency/DependencyModule.java
+++ b/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/javac/plugins/dependency/DependencyModule.java
@@ -210,8 +210,8 @@ public Path getOutputDepsProtoFile() {
     return outputDepsProtoFile;
   }
 
-  @VisibleForTesting
-  Set<Path> getUsedClasspath() {
+  /** Returns the classpath that was actually used during the compilation. */
+  public Set<Path> getUsedClasspath() {
     return usedClasspath;
   }
 
diff --git a/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/javac/statistics/BlazeJavacStatistics.java b/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/javac/statistics/BlazeJavacStatistics.java
index e75a0361dc205b..f3a1430303590d 100644
--- a/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/javac/statistics/BlazeJavacStatistics.java
+++ b/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/javac/statistics/BlazeJavacStatistics.java
@@ -65,6 +65,7 @@ private static Builder newBuilder() {
     return new AutoValue_BlazeJavacStatistics.Builder()
         .transitiveClasspathLength(0)
         .reducedClasspathLength(0)
+        .minClasspathLength(0)
         .transitiveClasspathFallback(false);
   }
 
@@ -81,6 +82,8 @@ private static Builder newBuilder() {
 
   public abstract int reducedClasspathLength();
 
+  public abstract int minClasspathLength();
+
   public abstract boolean transitiveClasspathFallback();
 
   // TODO(glorioso): We really need to think out more about what data to collect/store here.
@@ -115,6 +118,8 @@ public abstract static class Builder {
 
     public abstract Builder reducedClasspathLength(int length);
 
+    public abstract Builder minClasspathLength(int length);
+
     public abstract Builder transitiveClasspathFallback(boolean fallback);
 
     public Builder addErrorProneTiming(String key, Duration value) {