diff --git a/java/ql/src/experimental/Security/CWE/CWE-208/NonConstantTimeCheckOnSignatureQuery.qll b/java/ql/src/experimental/Security/CWE/CWE-208/NonConstantTimeCheckOnSignatureQuery.qll
index 8e545a5e8f04f..5972db6749555 100644
--- a/java/ql/src/experimental/Security/CWE/CWE-208/NonConstantTimeCheckOnSignatureQuery.qll
+++ b/java/ql/src/experimental/Security/CWE/CWE-208/NonConstantTimeCheckOnSignatureQuery.qll
@@ -95,7 +95,7 @@ private class ProduceCiphertextCall extends ProduceCryptoCall {
 }
 
 /** Holds if `fromNode` to `toNode` is a dataflow step that updates a cryptographic operation. */
-private predicate updateCryptoOperationStep(DataFlow2::Node fromNode, DataFlow2::Node toNode) {
+private predicate updateCryptoOperationStep(DataFlow::Node fromNode, DataFlow::Node toNode) {
   exists(MethodCall call, Method m |
     m = call.getMethod() and
     call.getQualifier() = toNode.asExpr() and
@@ -111,7 +111,7 @@ private predicate updateCryptoOperationStep(DataFlow2::Node fromNode, DataFlow2:
 }
 
 /** Holds if `fromNode` to `toNode` is a dataflow step that creates a hash. */
-private predicate createMessageDigestStep(DataFlow2::Node fromNode, DataFlow2::Node toNode) {
+private predicate createMessageDigestStep(DataFlow::Node fromNode, DataFlow::Node toNode) {
   exists(MethodCall ma, Method m | m = ma.getMethod() |
     m.getDeclaringType().hasQualifiedName("java.security", "MessageDigest") and
     m.hasStringSignature("digest()") and
@@ -135,7 +135,7 @@ private predicate createMessageDigestStep(DataFlow2::Node fromNode, DataFlow2::N
 }
 
 /** Holds if `fromNode` to `toNode` is a dataflow step that updates a hash. */
-private predicate updateMessageDigestStep(DataFlow2::Node fromNode, DataFlow2::Node toNode) {
+private predicate updateMessageDigestStep(DataFlow::Node fromNode, DataFlow::Node toNode) {
   exists(MethodCall ma, Method m | m = ma.getMethod() |
     m.hasQualifiedName("java.security", "MessageDigest", "update") and
     ma.getArgument(0) = fromNode.asExpr() and
@@ -154,7 +154,7 @@ private module UserInputInCryptoOperationConfig implements DataFlow::ConfigSig {
     exists(ProduceCryptoCall call | call.getQualifier() = sink.asExpr())
   }
 
-  predicate isAdditionalFlowStep(DataFlow2::Node fromNode, DataFlow2::Node toNode) {
+  predicate isAdditionalFlowStep(DataFlow::Node fromNode, DataFlow::Node toNode) {
     updateCryptoOperationStep(fromNode, toNode)
     or
     createMessageDigestStep(fromNode, toNode)
diff --git a/java/ql/src/experimental/Security/CWE/CWE-625/PermissiveDotRegexQuery.qll b/java/ql/src/experimental/Security/CWE/CWE-625/PermissiveDotRegexQuery.qll
index 925fd5632a352..5f015732cb385 100644
--- a/java/ql/src/experimental/Security/CWE/CWE-625/PermissiveDotRegexQuery.qll
+++ b/java/ql/src/experimental/Security/CWE/CWE-625/PermissiveDotRegexQuery.qll
@@ -94,11 +94,11 @@ private class CompileRegexSink extends DataFlow::ExprNode {
  * A data flow configuration for regular expressions that include permissive dots.
  */
 private module PermissiveDotRegexConfig implements DataFlow::ConfigSig {
-  predicate isSource(DataFlow2::Node src) { src.asExpr() instanceof PermissiveDotStr }
+  predicate isSource(DataFlow::Node src) { src.asExpr() instanceof PermissiveDotStr }
 
-  predicate isSink(DataFlow2::Node sink) { sink instanceof CompileRegexSink }
+  predicate isSink(DataFlow::Node sink) { sink instanceof CompileRegexSink }
 
-  predicate isBarrier(DataFlow2::Node node) {
+  predicate isBarrier(DataFlow::Node node) {
     exists(
       MethodCall ma, Field f // Pattern.compile(PATTERN, Pattern.DOTALL)
     |
diff --git a/java/ql/src/experimental/semmle/code/java/security/SpringUrlRedirect.qll b/java/ql/src/experimental/semmle/code/java/security/SpringUrlRedirect.qll
index d437c8fa3cc0b..c068dfbb7e36a 100644
--- a/java/ql/src/experimental/semmle/code/java/security/SpringUrlRedirect.qll
+++ b/java/ql/src/experimental/semmle/code/java/security/SpringUrlRedirect.qll
@@ -53,7 +53,7 @@ private class SpringViewUrlRedirectSink extends SpringUrlRedirectSink {
     )
     or
     exists(MethodCall ma, RedirectAppendCall rac |
-      DataFlow2::localExprFlow(rac.getQualifier(), ma.getQualifier()) and
+      DataFlow::localExprFlow(rac.getQualifier(), ma.getQualifier()) and
       ma.getMethod().hasName("append") and
       ma.getArgument(0) = this.asExpr() and
       any(SpringRequestMappingMethod sqmm).polyCalls*(this.getEnclosingCallable())