diff --git a/CHANGELOG.md b/CHANGELOG.md
index 60e27e2e..7ba9a341 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@
 - Add support for many L<sup>A</sup>T<sub>E</sub>X accents, enhance coverage of existing accents: double acute (e.g., `\H{O}`, &#x0150;), line below (e.g., `\b{h}`, &#x1e96;), cedilla (e.g., `\c{E}`, &#x0228;), dot below (e.g., `\d{A}`, &#x1ea0;), ogonek (e.g., `\k{A}`, &#x0104;), breve (e.g., `\u{A}`, &#x0102;), and caron (e.g., `\v{C}`, &#x010c;) ([PR #57](https://github.com/valentjn/ltex-ls/pull/57) by [@ed359](https://github.com/ed359), fixes [#56](https://github.com/valentjn/ltex-ls/issues/56))
 - Add support for special L<sup>A</sup>T<sub>E</sub>X characters: `\L` (&#x0141;), `\SS` (&#x1e9e;), `\i` (&#x0131;), `\j` (&#x0237;), `\l` (&#x0142;) ([PR #57](https://github.com/valentjn/ltex-ls/pull/57) by [@ed359](https://github.com/ed359), fixes [#56](https://github.com/valentjn/ltex-ls/issues/56))
 - Add `FR_SPELLING_RULE` as a rule for unknown words ([PR #47](https://github.com/valentjn/ltex-ls/pull/47) by [Nicolas Sicard (@biozic)](https://github.com/biozic))
+- Add support for documents with code language ID `tex` ([PR #54](https://github.com/valentjn/ltex-ls/pull/54) by [Lucas Alber (@LDAP)](https://github.com/LDAP), fixes [#53](https://github.com/valentjn/ltex-ls/issues/53))
 - Ignore non-object values for `InitializeParams.initializationOptions` (fixes [#65](https://github.com/valentjn/ltex-ls/issues/65))
 
 ## 10.0.0 (February 12, 2021)
diff --git a/ltexls-core/src/main/java/org/bsplines/ltexls/parsing/CodeAnnotatedTextBuilder.java b/ltexls-core/src/main/java/org/bsplines/ltexls/parsing/CodeAnnotatedTextBuilder.java
index dedb9852..0b1733f3 100644
--- a/ltexls-core/src/main/java/org/bsplines/ltexls/parsing/CodeAnnotatedTextBuilder.java
+++ b/ltexls-core/src/main/java/org/bsplines/ltexls/parsing/CodeAnnotatedTextBuilder.java
@@ -33,6 +33,8 @@ public abstract class CodeAnnotatedTextBuilder extends AnnotatedTextBuilder {
         new PlaintextAnnotatedTextBuilder());
     constructorMap.put("rsweave", (String codeLanguageId) ->
         new LatexAnnotatedTextBuilder(codeLanguageId));
+    constructorMap.put("tex", (String codeLanguageId) ->
+        new LatexAnnotatedTextBuilder(codeLanguageId));
   }
 
   public static CodeAnnotatedTextBuilder create(String codeLanguageId) {
diff --git a/ltexls-core/src/main/java/org/bsplines/ltexls/parsing/CodeFragmentizer.java b/ltexls-core/src/main/java/org/bsplines/ltexls/parsing/CodeFragmentizer.java
index 3a2d4891..d3d2ce5c 100644
--- a/ltexls-core/src/main/java/org/bsplines/ltexls/parsing/CodeFragmentizer.java
+++ b/ltexls-core/src/main/java/org/bsplines/ltexls/parsing/CodeFragmentizer.java
@@ -37,6 +37,8 @@ public abstract class CodeFragmentizer {
         new PlaintextFragmentizer(codeLanguageId));
     constructorMap.put("rsweave", (String codeLanguageId) ->
         new LatexFragmentizer(codeLanguageId));
+    constructorMap.put("tex", (String codeLanguageId) ->
+        new LatexFragmentizer(codeLanguageId));
   }
 
   public CodeFragmentizer(String codeLanguageId) {
diff --git a/ltexls-core/src/test/java/org/bsplines/ltexls/parsing/latex/LatexFragmentizerTest.java b/ltexls-core/src/test/java/org/bsplines/ltexls/parsing/latex/LatexFragmentizerTest.java
index 72728d22..d18068d8 100644
--- a/ltexls-core/src/test/java/org/bsplines/ltexls/parsing/latex/LatexFragmentizerTest.java
+++ b/ltexls-core/src/test/java/org/bsplines/ltexls/parsing/latex/LatexFragmentizerTest.java
@@ -141,6 +141,11 @@ public void testRsweave() {
     testCodeLanguage("rsweave");
   }
 
+  @Test
+  public void testTex() {
+    testCodeLanguage("tex");
+  }
+
   @Test
   public void testBabel() {
     CodeFragmentizer fragmentizer = CodeFragmentizer.create("latex");