diff --git a/core/src/main/java/org/opensearch/sql/analysis/AnalysisContext.java b/core/src/main/java/org/opensearch/sql/analysis/AnalysisContext.java
index b27e435a6cf..2fc0ddbe1a3 100644
--- a/core/src/main/java/org/opensearch/sql/analysis/AnalysisContext.java
+++ b/core/src/main/java/org/opensearch/sql/analysis/AnalysisContext.java
@@ -71,4 +71,11 @@ public TypeEnvironment pop() {
     environment = curEnv.getParent();
     return curEnv;
   }
+
+  /**
+   * Push a new isolated environment without parent access.
+   */
+  public void pushIsolated() {
+    environment = new TypeEnvironment(null);
+  }
 }
diff --git a/core/src/main/java/org/opensearch/sql/analysis/Analyzer.java b/core/src/main/java/org/opensearch/sql/analysis/Analyzer.java
index 2fdd8d6b843..e8a0d45f5c4 100644
--- a/core/src/main/java/org/opensearch/sql/analysis/Analyzer.java
+++ b/core/src/main/java/org/opensearch/sql/analysis/Analyzer.java
@@ -419,7 +419,7 @@ public LogicalPlan visitProject(Project node, AnalysisContext context) {
 
     child = processNestedAnalysis(node.getProjectList(), namedExpressions, child, context);
 
-    context.push();
+    context.pushIsolated();
     TypeEnvironment newEnv = context.peek();
     namedExpressions.forEach(
         expr ->
diff --git a/core/src/test/java/org/opensearch/sql/analysis/AnalyzerTest.java b/core/src/test/java/org/opensearch/sql/analysis/AnalyzerTest.java
index 6324e7ee5bd..0fc9e026213 100644
--- a/core/src/test/java/org/opensearch/sql/analysis/AnalyzerTest.java
+++ b/core/src/test/java/org/opensearch/sql/analysis/AnalyzerTest.java
@@ -898,9 +898,6 @@ public void remove_source() {
             AstDSL.field("double_value")));
   }
 
-  @Disabled(
-      "the project/remove command should shrink the type env. Should be enabled once "
-          + "https://github.com/opensearch-project/sql/issues/917 is resolved")
   @Test
   public void project_source_change_type_env() {
     SemanticCheckException exception =