diff --git a/environment.yml b/environment.yml
index bbe9b655..13f2cb08 100644
--- a/environment.yml
+++ b/environment.yml
@@ -1,15 +1,17 @@
+name: procgen
 channels:
   - conda-forge
-
+  - nodefaults
 dependencies:
-  - python=3.7.3
+  - python
   # https://www.anaconda.com/utilizing-the-new-compilers-in-anaconda-distribution-5/
-  - c-compiler=1.3.0
+  - c-compiler
   - cmake=3.21.3
-  - qt=5.12.5  # conda-forge does not have 5.13.2 available
+  - qt=5.15.8
+  - filelock
+  - numpy
+  - gym
+  - glfw
   - pip
   - pip:
     - gym3==0.3.3
-    - numpy==1.17.2
-    - gym==0.15.3
-    - filelock==3.0.10
diff --git a/procgen/CMakeLists.txt b/procgen/CMakeLists.txt
index 31084aa5..a2b1b233 100644
--- a/procgen/CMakeLists.txt
+++ b/procgen/CMakeLists.txt
@@ -75,4 +75,4 @@ add_library(env
 # find libenv.h header
 target_include_directories(env PUBLIC ${LIBENV_DIR})
 
-target_link_libraries(env Qt5::Gui)
\ No newline at end of file
+target_link_libraries(env Qt5::Gui)
diff --git a/procgen/src/games/chaser.cpp b/procgen/src/games/chaser.cpp
index a6ec0c8d..15f94d01 100644
--- a/procgen/src/games/chaser.cpp
+++ b/procgen/src/games/chaser.cpp
@@ -293,7 +293,6 @@ class ChaserGame : public BasicAbstractGame {
     void game_step() override {
         BasicAbstractGame::game_step();
 
-        int num_orbs = 0;
         int num_enemies = 0;
 
         float default_enemy_speed = .5;
@@ -303,7 +302,6 @@ class ChaserGame : public BasicAbstractGame {
             auto ent = entities[j];
 
             if (ent->type == ORB) {
-                num_orbs++;
             } else if (ent->type == ENEMY_EGG) {
                 num_enemies++;
                 ent->health -= 1;
diff --git a/procgen/src/games/starpilot.cpp b/procgen/src/games/starpilot.cpp
index 9ea93e03..7ab579ec 100644
--- a/procgen/src/games/starpilot.cpp
+++ b/procgen/src/games/starpilot.cpp
@@ -228,7 +228,7 @@ class StarPilotGame : public BasicAbstractGame {
 
         bool can_spawn_left = options.distribution_mode != EasyMode;
 
-        for (int i = 0; t <= SHOOTER_WIN_TIME; i++) {
+        while (t <= SHOOTER_WIN_TIME) {
             int group_size = 1;
             float start_weight = rand_gen.rand01() * total_prob_weight;
             float curr_weight = start_weight;