diff --git a/cpp/ql/src/CHANGELOG.md b/cpp/ql/src/CHANGELOG.md
index 7896479549fc..e73850bbfe96 100644
--- a/cpp/ql/src/CHANGELOG.md
+++ b/cpp/ql/src/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ### Minor Analysis Improvements
 
-* The `cpp/unclear-array-index-validation` ("Unclear validation of array index") query has been improved to reduce false positives increase true positives.
+* The `cpp/unclear-array-index-validation` ("Unclear validation of array index") query has been improved to reduce false positives and increase true positives.
 * Fixed false positives in the `cpp/uninitialized-local` ("Potentially uninitialized local variable") query if there are extraction errors in the function.
 * The `cpp/incorrect-string-type-conversion` query now produces fewer false positives caused by failure to detect byte arrays.
 * The `cpp/incorrect-string-type-conversion` query now produces fewer false positives caused by failure to recognize dynamic checks prior to possible dangerous widening.
diff --git a/cpp/ql/src/change-notes/released/1.2.5.md b/cpp/ql/src/change-notes/released/1.2.5.md
index cf937d43e6b3..04aead25cb99 100644
--- a/cpp/ql/src/change-notes/released/1.2.5.md
+++ b/cpp/ql/src/change-notes/released/1.2.5.md
@@ -2,7 +2,7 @@
 
 ### Minor Analysis Improvements
 
-* The `cpp/unclear-array-index-validation` ("Unclear validation of array index") query has been improved to reduce false positives increase true positives.
+* The `cpp/unclear-array-index-validation` ("Unclear validation of array index") query has been improved to reduce false positives and increase true positives.
 * Fixed false positives in the `cpp/uninitialized-local` ("Potentially uninitialized local variable") query if there are extraction errors in the function.
 * The `cpp/incorrect-string-type-conversion` query now produces fewer false positives caused by failure to detect byte arrays.
 * The `cpp/incorrect-string-type-conversion` query now produces fewer false positives caused by failure to recognize dynamic checks prior to possible dangerous widening.
diff --git a/python/ql/lib/CHANGELOG.md b/python/ql/lib/CHANGELOG.md
index 4832015d920d..c1f3765162e0 100644
--- a/python/ql/lib/CHANGELOG.md
+++ b/python/ql/lib/CHANGELOG.md
@@ -3,7 +3,7 @@
 ### Minor Analysis Improvements
 
 * Modelled that `re.finditer` returns an iterable of `re.Match` objects. This is now understood by the API graph in many cases.
-* Type tracking, and hence the API graph, is now able to correctly trace trough comprehensions.
+* Type tracking, and hence the API graph, is now able to correctly trace through comprehensions.
 * More precise modelling of the dataflow through comprehensions. In particular, captured variables are now handled correctly.
 * Dataflow out of yield is added, allowing proper tracing through generators.
 * Added several models of standard library functions and classes, in anticipation of no longer extracting the standard library in a future release.
diff --git a/python/ql/lib/change-notes/released/2.1.1.md b/python/ql/lib/change-notes/released/2.1.1.md
index 949fcd07f7aa..bd2b31a218d9 100644
--- a/python/ql/lib/change-notes/released/2.1.1.md
+++ b/python/ql/lib/change-notes/released/2.1.1.md
@@ -3,7 +3,7 @@
 ### Minor Analysis Improvements
 
 * Modelled that `re.finditer` returns an iterable of `re.Match` objects. This is now understood by the API graph in many cases.
-* Type tracking, and hence the API graph, is now able to correctly trace trough comprehensions.
+* Type tracking, and hence the API graph, is now able to correctly trace through comprehensions.
 * More precise modelling of the dataflow through comprehensions. In particular, captured variables are now handled correctly.
 * Dataflow out of yield is added, allowing proper tracing through generators.
 * Added several models of standard library functions and classes, in anticipation of no longer extracting the standard library in a future release.