diff --git a/build_lib/asm-4.0_RC1.jar b/build_lib/asm-4.0_RC1.jar
deleted file mode 100644
index 68c0b6024c6..00000000000
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diff --git a/build_lib/asm-4.0_RC2.jar b/build_lib/asm-4.0_RC2.jar
new file mode 100644
index 00000000000..beb18bc68e2
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diff --git a/build_lib/asm-analysis-4.0_RC1.jar b/build_lib/asm-analysis-4.0_RC1.jar
deleted file mode 100644
index 58230b8abe1..00000000000
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diff --git a/build_lib/asm-analysis-4.0_RC2.jar b/build_lib/asm-analysis-4.0_RC2.jar
new file mode 100644
index 00000000000..65cbfe325d1
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diff --git a/build_lib/asm-commons-4.0_RC1.jar b/build_lib/asm-commons-4.0_RC1.jar
deleted file mode 100644
index 09a208deecf..00000000000
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diff --git a/build_lib/asm-commons-4.0_RC2.jar b/build_lib/asm-commons-4.0_RC2.jar
new file mode 100644
index 00000000000..24f497bc9fe
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diff --git a/build_lib/asm-tree-4.0_RC1.jar b/build_lib/asm-tree-4.0_RC1.jar
deleted file mode 100644
index 5707be56127..00000000000
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diff --git a/build_lib/asm-tree-4.0_RC2.jar b/build_lib/asm-tree-4.0_RC2.jar
new file mode 100644
index 00000000000..eb447ec18d5
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diff --git a/build_lib/asm-util-4.0_RC1.jar b/build_lib/asm-util-4.0_RC1.jar
deleted file mode 100644
index 3707c856281..00000000000
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diff --git a/build_lib/asm-util-4.0_RC2.jar b/build_lib/asm-util-4.0_RC2.jar
new file mode 100644
index 00000000000..fed824b37d5
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diff --git a/default.build.properties b/default.build.properties
index c07b42443c6..dcf96923287 100644
--- a/default.build.properties
+++ b/default.build.properties
@@ -82,7 +82,7 @@ tzdata.ftp.anonymous.userid=jruby@jruby.org
 tzdata.distributed.version=2010k
 tzdata.latest.version=2011i
 jline.version=1.0
-asm.version=4.0_RC1
+asm.version=4.0_RC2
 shared.lib.dir=lib/ruby/site_ruby/shared
 asm.jar=${build.lib.dir}/asm-${asm.version}.jar
 asm.commons.jar=${build.lib.dir}/asm-commons-${asm.version}.jar